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Yes, a diode across the inductor is a typical method to absorb spikes produced when current is suddenly shut off.
Yes, a diode across the inductor is a typical method to absorb spikes produced when current is suddenly shut off.
Your transistor will be damaged then. The diode must be connected across the inductor, like Brad said.I have the diode connected from the collector of the transistor to ground. i.e between collector (+Ve diode end) and emitter. My inductor is between collector and +Vcc rail in a basic common emitter config.
You surely don't want to connect a diode across the coil because it shorts the oscillator output voltage. The bridge drivers discussed initially are usually clamping the output voltage to the supply rails, a straightforwardly way to avoid switch overvoltage.
By nature of an inductor, average voltage across it must be zero. Thus clamping one halfwave clamps the other too as long you are intending a symmetrical waveform.Actually at the moment I'm using positive only square wave pulses so a diode across the coil does not short my oscillator. I can see it does stop the large over voltage spikes caused by coil ringing.
By nature of an inductor, average voltage across it must be zero. Thus clamping one halfwave clamps the other too as long you are intending a symmetrical waveform.
You surely don't want to connect a diode across the coil because it shorts the oscillator output voltage. The bridge drivers discussed initially are usually clamping the output voltage to the supply rails, a straightforward way to avoid switch overvoltage.
I noticed the single transistor circuit, but I'm missing a substantial discussion of circuit operation modes and reasonable circuit design. Why no resonance capacitor is fitted at all although previous posts are lamenting about too much harmonics?
A single transistor output stage can be operated in class C with Vce swinging between 0 and double Vcc, no need for clamping diodes.
[/B][/COLOR] [URL="https://scholar.google.ca/scholar_url?url=http://www.mdpi.com/1996-1073/11/4/878/htm&hl=en&sa=X&scisig=AAGBfm3foIOKjHQOe-wAVcN_aPwvjxOHgQ&nossl=1&oi=scholaralrt"]Omnidirectional [B]Wireless Power Transfer [/B]System Based on Rotary Transmitting Coil for Household Appliances[/URL][/h][COLOR=#006621]G Liu, B Zhang, W Xiao, D Qiu, Y Chen, J Guan - Energies, 2018[/COLOR]
Abstract An omnidirectional magnetically coupled resonant [B]wireless power transfer [/B]
(WPT) system based on rotary transmitting coil is presented. The proposed scheme
can ease the variations of the transfer efficiency and output power caused by the …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=http://www.mdpi.com/1996-1073/11/4/878/htm&rt=Omnidirectional+Wireless+Power+Transfer+System+Based+on+Rotary+Transmitting+Coil+for+Household+Appliances&scisig=AAGBfm2_M8HFb6fnUTfzccrVKtkoIXwhWQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=http://www.mdpi.com/1996-1073/11/4/878/htm&rt=Omnidirectional+Wireless+Power+Transfer+System+Based+on+Rotary+Transmitting+Coil+for+Household+Appliances&scisig=AAGBfm2_M8HFb6fnUTfzccrVKtkoIXwhWQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=http://www.mdpi.com/1996-1073/11/4/878/htm&rt=Omnidirectional+Wireless+Power+Transfer+System+Based+on+Rotary+Transmitting+Coil+for+Household+Appliances&scisig=AAGBfm2_M8HFb6fnUTfzccrVKtkoIXwhWQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US9929605B2/en&hl=en&sa=X&scisig=AAGBfm1IA9vsqxrN2M_Vaq2z1mirlVALNA&nossl=1&oi=scholaralrt"][B]Wireless power transfer [/B]device with foreign object detection, system, and method for performing the same[/URL][/h][COLOR=#006621]H Nakano, O Kozakai, S Komiyama, K Fujimaki - US Patent 9,929,605, 2018[/COLOR]
Abstract Methods and apparatus for detecting the presence of undesirable foreign
matter in a region between a wireless power transmission apparatus and a power
reception apparatus are described. First and second detection methods, based on …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US9929605B2/en&rt=Wireless+power+transfer+device+with+foreign+object+detection,+system,+and+method+for+performing+the+same&scisig=AAGBfm35S-iBbzC30aPF9NrNzoygQqpknw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US9929605B2/en&rt=Wireless+power+transfer+device+with+foreign+object+detection,+system,+and+method+for+performing+the+same&scisig=AAGBfm35S-iBbzC30aPF9NrNzoygQqpknw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US9929605B2/en&rt=Wireless+power+transfer+device+with+foreign+object+detection,+system,+and+method+for+performing+the+same&scisig=AAGBfm35S-iBbzC30aPF9NrNzoygQqpknw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=http://www.freepatentsonline.com/y2018/0076668.html&hl=en&sa=X&scisig=AAGBfm3w9WV5ym91w5Da1RHGyY7d4wJ_Nw&nossl=1&oi=scholaralrt"][B]WIRELESS POWER TRANSFER [/B]SYSTEMS AND COMPONENTS THEREOF[/URL][/h][COLOR=#006621]PV Parimi, DE Senior - US Patent App. 15/701,112, 2018[/COLOR]
Abstract: The present application provides a [B]wireless power transfer [/B]system
including a transmitter and at least one receiver, and also provides transmitters and
receivers for such systems. The transmitter includes a driver coil and a transmitter …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=http://www.freepatentsonline.com/y2018/0076668.html&rt=WIRELESS+POWER+TRANSFER+SYSTEMS+AND+COMPONENTS+THEREOF&scisig=AAGBfm00tBHADWQ42q-9bs5fJ21DdcJarg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=http://www.freepatentsonline.com/y2018/0076668.html&rt=WIRELESS+POWER+TRANSFER+SYSTEMS+AND+COMPONENTS+THEREOF&scisig=AAGBfm00tBHADWQ42q-9bs5fJ21DdcJarg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=http://www.freepatentsonline.com/y2018/0076668.html&rt=WIRELESS+POWER+TRANSFER+SYSTEMS+AND+COMPONENTS+THEREOF&scisig=AAGBfm00tBHADWQ42q-9bs5fJ21DdcJarg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=http://www.freepatentsonline.com/y2018/0069433.html&hl=en&sa=X&scisig=AAGBfm1pM9rU7aEvmLjVNJn4O-sTrFQMWQ&nossl=1&oi=scholaralrt"][B]WIRELESS POWER TRANSFER [/B]SYSTEM AND A WIRELESS POWER RECEIVER THEREOF[/URL][/h][COLOR=#006621]Y Lin, C Wang - US Patent App. 15/593,246, 2018[/COLOR]
Abstract: A [B]wireless power transfer [/B]system includes a wireless power transmitter and
a wireless power receiver. The wireless power receiver includes: a receiver
resonator for wirelessly receiving power from the wireless power transmitter through …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=http://www.freepatentsonline.com/y2018/0069433.html&rt=WIRELESS+POWER+TRANSFER+SYSTEM+AND+A+WIRELESS+POWER+RECEIVER+THEREOF&scisig=AAGBfm0zR-in53XfwlV1YOxqpW-L8N6B4Q"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=http://www.freepatentsonline.com/y2018/0069433.html&rt=WIRELESS+POWER+TRANSFER+SYSTEM+AND+A+WIRELESS+POWER+RECEIVER+THEREOF&scisig=AAGBfm0zR-in53XfwlV1YOxqpW-L8N6B4Q"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=http://www.freepatentsonline.com/y2018/0069433.html&rt=WIRELESS+POWER+TRANSFER+SYSTEM+AND+A+WIRELESS+POWER+RECEIVER+THEREOF&scisig=AAGBfm0zR-in53XfwlV1YOxqpW-L8N6B4Q"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=http://www.freepatentsonline.com/y2018/0076666.html&hl=en&sa=X&scisig=AAGBfm3zhK5aqW7y1hRK-kpPPqm2jrTEpg&nossl=1&oi=scholaralrt"]RECONFIGURABLE WIRELESS POWER RESONATOR[/URL][/h][COLOR=#006621]WH Von Novak III, S Shevde, K Burrell, J Maalouf… - US Patent App. 15/264,854, 2018[/COLOR]
… Description: TECHNICAL FIELD. The present disclosure relates generally
to [B]wireless[/B] [B]power[/B] [B]transfer[/B], and in particular to a reconfigurable wireless power
resonator. BACKGROUND. An increasing number and variety of electronic …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=http://www.freepatentsonline.com/y2018/0076666.html&rt=RECONFIGURABLE+WIRELESS+POWER+RESONATOR&scisig=AAGBfm1GfKSlUJbE1735pchU05_Dxp9fNQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=http://www.freepatentsonline.com/y2018/0076666.html&rt=RECONFIGURABLE+WIRELESS+POWER+RESONATOR&scisig=AAGBfm1GfKSlUJbE1735pchU05_Dxp9fNQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=http://www.freepatentsonline.com/y2018/0076666.html&rt=RECONFIGURABLE+WIRELESS+POWER+RESONATOR&scisig=AAGBfm1GfKSlUJbE1735pchU05_Dxp9fNQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083491A1/en&hl=en&sa=X&scisig=AAGBfm3XFGUcvbwK7MQMSP8rIlW8lWD8hg&nossl=1&oi=scholaralrt"][B]Wireless power transfer [/B]system[/URL][/h][COLOR=#006621]T Hosotani - US Patent App. 15/821,381, 2018[/COLOR]
Abstract A power receiving rectifier circuit is configured in series with a power
receiving resonance mechanism. A first power receiving device has a load with a
small equivalent resistance value, and the frequency response of a voltage gain …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083491A1/en&rt=Wireless+power+transfer+system&scisig=AAGBfm1HBtmOVnDxTUSgaMB4UghHW7R4Ag"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083491A1/en&rt=Wireless+power+transfer+system&scisig=AAGBfm1HBtmOVnDxTUSgaMB4UghHW7R4Ag"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083491A1/en&rt=Wireless+power+transfer+system&scisig=AAGBfm1HBtmOVnDxTUSgaMB4UghHW7R4Ag"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083488A1/en&hl=en&sa=X&scisig=AAGBfm2DxytpUk7uJ_QPQf0Nb0pynfAErg&nossl=1&oi=scholaralrt"]Methods and apparatus for wireless power and communication transfer[/URL][/h][COLOR=#006621]P Menegoli - US Patent App. 15/273,546, 2018[/COLOR]
… Description. BACKGROUND Field of the Invention [0001]. The present
disclosure relates generally to [B]wireless[/B] [B]power[/B] [B]transfer[/B] and communication …
[0009]. FIG. 1 is a functional block diagram of a [B]wireless[/B] [B]power[/B] [B]transfer[/B] system …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083488A1/en&rt=Methods+and+apparatus+for+wireless+power+and+communication+transfer&scisig=AAGBfm0BagBY0IW40Ofcp08Jwk4kpL1nNQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083488A1/en&rt=Methods+and+apparatus+for+wireless+power+and+communication+transfer&scisig=AAGBfm0BagBY0IW40Ofcp08Jwk4kpL1nNQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083488A1/en&rt=Methods+and+apparatus+for+wireless+power+and+communication+transfer&scisig=AAGBfm0BagBY0IW40Ofcp08Jwk4kpL1nNQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083485A1/en&hl=en&sa=X&scisig=AAGBfm0ZPlvLtddwQToXmgvLe1f8yluJjA&nossl=1&oi=scholaralrt"]Non-contact power transfer in electronic volume correctors[/URL][/h][COLOR=#006621]AHS Rao, DK KN - US Patent App. 15/267,344, 2018[/COLOR]
… circuitry. [0026]. In the wireless charging system 30, which implements a non-contact
power transfer (also known as a [B]wireless[/B] [B]power[/B] [B]transfer[/B]); the transfer of power can
occur utilizing the same principal as in a transformer. That …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083485A1/en&rt=Non-contact+power+transfer+in+electronic+volume+correctors&scisig=AAGBfm2dP3ktpfLHKBrBbp4ypZvT5FWAMw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083485A1/en&rt=Non-contact+power+transfer+in+electronic+volume+correctors&scisig=AAGBfm2dP3ktpfLHKBrBbp4ypZvT5FWAMw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083485A1/en&rt=Non-contact+power+transfer+in+electronic+volume+correctors&scisig=AAGBfm2dP3ktpfLHKBrBbp4ypZvT5FWAMw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083487A1/en&hl=en&sa=X&scisig=AAGBfm10sl6PxKqx1qt-cG8cF2qCyQKq9Q&nossl=1&oi=scholaralrt"]Multimode wireless power receiver circuit[/URL][/h][COLOR=#006621]M Nalbant - US Patent App. 15/268,328, 2018[/COLOR]
… Further, the multiple coil phases can be connected in a way that is more
advantageous to an efficient [B]wireless[/B] [B]power[/B] [B]transfer[/B] … US20130260676A1
(en), 2013-10-03, Apparatus, system, and method for back-channel …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083487A1/en&rt=Multimode+wireless+power+receiver+circuit&scisig=AAGBfm0AFBlSP0lIhDHWw5rIynbGCzZ-lg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083487A1/en&rt=Multimode+wireless+power+receiver+circuit&scisig=AAGBfm0AFBlSP0lIhDHWw5rIynbGCzZ-lg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083487A1/en&rt=Multimode+wireless+power+receiver+circuit&scisig=AAGBfm0AFBlSP0lIhDHWw5rIynbGCzZ-lg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083490A1/en&hl=en&sa=X&scisig=AAGBfm3xu8N3nCzFwFuRmBOGlnsME3mmcw&nossl=1&oi=scholaralrt"]Single-Isolation Wireless Power Converter[/URL][/h][COLOR=#006621]IH Oh, MP Pandya, A Cherlan, BK PATEL - US Patent App. 15/711,182, 2018[/COLOR]
… In some cases, a power converter can include a [B]wireless[/B] [B]power[/B] [B]transfer[/B] stage that transfers
power to the load across an air gap by inducing a current in a coil coupled to the load …
Finally, the power converter also includes a [B]wireless[/B] [B]power[/B] [B]transfer[/B] stage …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083490A1/en&rt=Single-Isolation+Wireless+Power+Converter&scisig=AAGBfm0wTRYXQ056-gcdAzc8UuwaKutdPw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083490A1/en&rt=Single-Isolation+Wireless+Power+Converter&scisig=AAGBfm0wTRYXQ056-gcdAzc8UuwaKutdPw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083490A1/en&rt=Single-Isolation+Wireless+Power+Converter&scisig=AAGBfm0wTRYXQ056-gcdAzc8UuwaKutdPw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083489A1/en&hl=en&sa=X&scisig=AAGBfm04uRpitqpAA3MsFRjQ_d_VNzdiGQ&nossl=1&oi=scholaralrt"]Methods and apparatus for wireless power and communication transfer[/URL][/h][COLOR=#006621]A Govindaraj, WH Von Novak III - US Patent App. 15/273,564, 2018[/COLOR]
… Description. BACKGROUND Field of the Invention [0001]. The present disclosure relates
generally to [B]wireless[/B] [B]power[/B] [B]transfer[/B] … Accordingly, to make the [B]wireless[/B] [B]power[/B] [B]transfer[/B]
most efficient, the PTU adjusts its transmit current based on the received rectified voltage …
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083489A1/en&rt=Methods+and+apparatus+for+wireless+power+and+communication+transfer&scisig=AAGBfm2rKOclK0Omqh-_luI19a6URYhC3g"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083489A1/en&rt=Methods+and+apparatus+for+wireless+power+and+communication+transfer&scisig=AAGBfm2rKOclK0Omqh-_luI19a6URYhC3g"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083489A1/en&rt=Methods+and+apparatus+for+wireless+power+and+communication+transfer&scisig=AAGBfm2rKOclK0Omqh-_luI19a6URYhC3g"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180078329A1/en&hl=en&sa=X&scisig=AAGBfm2R8hLkz-xggg1uvky-JJz-_i5uQg&nossl=1&oi=scholaralrt"]Systems and methods for locating implanted wireless power transmission devices[/URL][/h][COLOR=#006621]JF Hansen, C Eskildsen - US Patent App. 15/709,743, 2018[/COLOR]
… [0041]. FIG. 1 illustrates a basic [B]wireless[/B] [B]power[/B] [B]transfer[/B] system. [0042]. FIG.
2 illustrates magnetic coupling between a pair of coils. [0043]. FIGS. 3A and
3B illustrate the effect of coil alignment on the coupling coefficient. [0044] …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180078329A1/en&rt=Systems+and+methods+for+locating+implanted+wireless+power+transmission+devices&scisig=AAGBfm2PdoY-sipPBUVO5HBBiBAyu77fyA"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180078329A1/en&rt=Systems+and+methods+for+locating+implanted+wireless+power+transmission+devices&scisig=AAGBfm2PdoY-sipPBUVO5HBBiBAyu77fyA"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180078329A1/en&rt=Systems+and+methods+for+locating+implanted+wireless+power+transmission+devices&scisig=AAGBfm2PdoY-sipPBUVO5HBBiBAyu77fyA"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US9935482B1/en&hl=en&sa=X&scisig=AAGBfm3ZUa6RWU21srua067D4sskYLWfUQ&nossl=1&oi=scholaralrt"]Wireless power transmitters that transmit at determined times based on power availability and consumption at a receiving mobile device[/URL][/h][COLOR=#006621]MA Leabman, GS Brewer - US Patent 9,935,482, 2018[/COLOR]
The embodiments described herein include a transmitter that transmits a power
transmission signal (eg, radio frequency (RF) signal waves) to create a
three-dimensional pocket of energy. At least one receiver can be connected …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US9935482B1/en&rt=Wireless+power+transmitters+that+transmit+at+determined+times+based+on+power+availability+and+consumption+at+a+receiving+mobile+device&scisig=AAGBfm380GwaesO1o5uwIaCqh_zlvlf1TQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US9935482B1/en&rt=Wireless+power+transmitters+that+transmit+at+determined+times+based+on+power+availability+and+consumption+at+a+receiving+mobile+device&scisig=AAGBfm380GwaesO1o5uwIaCqh_zlvlf1TQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US9935482B1/en&rt=Wireless+power+transmitters+that+transmit+at+determined+times+based+on+power+availability+and+consumption+at+a+receiving+mobile+device&scisig=AAGBfm380GwaesO1o5uwIaCqh_zlvlf1TQ"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/USD814432S1/en&hl=en&sa=X&scisig=AAGBfm3eKNnnx6TJzQkKbYtTEAkoSB209g&nossl=1&oi=scholaralrt"]Resonator coil[/URL][/h][COLOR=#006621]YX Yeng - US Patent App. 29/554,188, 2018[/COLOR]
… US20120091794A1 (en), 2008-09-27, 2012-04-19, Campanella Andrew J, Wirelessly
powered laptop and desktop environment. US20120091820A1 (en), 2008-09-27,
2012-04-19, Campanella Andrew J, [B]Wireless[/B] [B]power[/B] [B]transfer[/B] within a circuit breaker …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/USD814432S1/en&rt=Resonator+coil&scisig=AAGBfm1knxGXdnn7qmxe8uYJZpLDAc0LGg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/USD814432S1/en&rt=Resonator+coil&scisig=AAGBfm1knxGXdnn7qmxe8uYJZpLDAc0LGg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/USD814432S1/en&rt=Resonator+coil&scisig=AAGBfm1knxGXdnn7qmxe8uYJZpLDAc0LGg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=http://www.freepatentsonline.com/y2018/0069434.html&hl=en&sa=X&scisig=AAGBfm0SZFZ6zKlcaDj28awq3iJQvngyzQ&nossl=1&oi=scholaralrt"]FILTER CIRCUIT AND WIRELESS POWER TRANSMISSION SYSTEM[/URL][/h][COLOR=#006621]K Hasegawa - US Patent App. 15/695,676, 2018[/COLOR]
… equivalent range. Previous Patent: [B]WIRELESS[/B] [B]POWER[/B] [B]TRANSFER[/B] SYSTEM AND
A WIRELESS POWER RECEIVER THEREOF Next Patent: POWER TRANSMISSION
DEVICE AND WIRELESS POWER TRANSMISSION SYSTEM …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=http://www.freepatentsonline.com/y2018/0069434.html&rt=FILTER+CIRCUIT+AND+WIRELESS+POWER+TRANSMISSION+SYSTEM&scisig=AAGBfm19QcWOaZv9NCFmVwHtFRAf4OIKqg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=http://www.freepatentsonline.com/y2018/0069434.html&rt=FILTER+CIRCUIT+AND+WIRELESS+POWER+TRANSMISSION+SYSTEM&scisig=AAGBfm19QcWOaZv9NCFmVwHtFRAf4OIKqg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=http://www.freepatentsonline.com/y2018/0069434.html&rt=FILTER+CIRCUIT+AND+WIRELESS+POWER+TRANSMISSION+SYSTEM&scisig=AAGBfm19QcWOaZv9NCFmVwHtFRAf4OIKqg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083669A1/en&hl=en&sa=X&scisig=AAGBfm3CSOHr1cUWju-6aefAZUOElwOIZQ&nossl=1&oi=scholaralrt"]Wireless power transmitter and method of controlling the same[/URL][/h][COLOR=#006621]IW Jeong, YW Choi, SJ Kim - US Patent App. 15/686,367, 2018[/COLOR]
A wireless power transmitter includes a switch circuit including switches
connected to a transmission resonator; a current detector configured to detect
a transient current induced in the transmission resonator; and a controller …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083669A1/en&rt=Wireless+power+transmitter+and+method+of+controlling+the+same&scisig=AAGBfm3HEddlwjKVJqcKIQcSerd1_nPv4w"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083669A1/en&rt=Wireless+power+transmitter+and+method+of+controlling+the+same&scisig=AAGBfm3HEddlwjKVJqcKIQcSerd1_nPv4w"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083669A1/en&rt=Wireless+power+transmitter+and+method+of+controlling+the+same&scisig=AAGBfm3HEddlwjKVJqcKIQcSerd1_nPv4w"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083475A1/en&hl=en&sa=X&scisig=AAGBfm1G3ciCqjhniO1Tx1L-2KoOwsGA4A&nossl=1&oi=scholaralrt"]Charging device having small loop transmission coils for wireless charging a target device[/URL][/h][COLOR=#006621]Y Liu, J Chen - US Patent App. 15/270,681, 2018[/COLOR]
A charging device to wirelessly charge a target device, including: a coil antenna
having a first surface facing a first direction at which the target device is placed
for charging and a second surface facing an opposite direction from the first …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083475A1/en&rt=Charging+device+having+small+loop+transmission+coils+for+wireless+charging+a+target+device&scisig=AAGBfm2U4kP6upzHYqIYnMbOV9SHuGjrAg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083475A1/en&rt=Charging+device+having+small+loop+transmission+coils+for+wireless+charging+a+target+device&scisig=AAGBfm2U4kP6upzHYqIYnMbOV9SHuGjrAg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083475A1/en&rt=Charging+device+having+small+loop+transmission+coils+for+wireless+charging+a+target+device&scisig=AAGBfm2U4kP6upzHYqIYnMbOV9SHuGjrAg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083484A1/en&hl=en&sa=X&scisig=AAGBfm1Agx6EIAX_tsqTq2U7h4vZ-3QaFA&nossl=1&oi=scholaralrt"]Receiver electrodes of a capacitive wireless powering system[/URL][/h][COLOR=#006621]E Waffenschmidt, CTHF Liedenbaum, A Sempel… - US Patent App. 15/825,260, 2018[/COLOR]
… large area. [0003]. A [B]wireless[/B] [B]power[/B] [B]transfer[/B] refers to the supply of electrical power
without any wires or contacts, whereby the powering of electronic devices is
performed through a wireless medium. One popular application …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083484A1/en&rt=Receiver+electrodes+of+a+capacitive+wireless+powering+system&scisig=AAGBfm1mlT1QgmGzObcWcfEJFF-bMexCLw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083484A1/en&rt=Receiver+electrodes+of+a+capacitive+wireless+powering+system&scisig=AAGBfm1mlT1QgmGzObcWcfEJFF-bMexCLw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083484A1/en&rt=Receiver+electrodes+of+a+capacitive+wireless+powering+system&scisig=AAGBfm1mlT1QgmGzObcWcfEJFF-bMexCLw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180078852A1/en&hl=en&sa=X&scisig=AAGBfm22iKbu_rjmVFkesEvasJ8EmCy0DA&nossl=1&oi=scholaralrt"]Portable Entertainment System[/URL][/h][COLOR=#006621]F Maldonado - US Patent App. 15/268,236, 2018[/COLOR]
… [0043]. The base power system 15 is split into two sub components, namely a power
unit 151 and a [B]wireless[/B] [B]power[/B] [B]transfer[/B] unit 152 … The [B]wireless[/B] [B]power[/B] [B]transfer[/B] unit 152
is housed in the frame 11, next to the controller dock 13 …
[TABLE]
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[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180078852A1/en&rt=Portable+Entertainment+System&scisig=AAGBfm0Vl6bXHiFb7l5wWVbmIvNtyekIbw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180078852A1/en&rt=Portable+Entertainment+System&scisig=AAGBfm0Vl6bXHiFb7l5wWVbmIvNtyekIbw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180078852A1/en&rt=Portable+Entertainment+System&scisig=AAGBfm0Vl6bXHiFb7l5wWVbmIvNtyekIbw"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
[/TR]
[/TABLE]
[h=3][URL="https://scholar.google.ca/scholar_url?url=https://patents.google.com/patent/US20180083492A1/en&hl=en&sa=X&scisig=AAGBfm0MYEQJz4iXDLPFfHEblBmx6nYCcQ&nossl=1&oi=scholaralrt"]Energy transmission apparatus and method[/URL][/h][COLOR=#006621]SH Bae, KM Lee - US Patent App. 15/824,683, 2018[/COLOR]
… KR10-2010-0095456, 2010-09-30, KR20100095456A KR20120033758A
(en), 2010-09-30, 2010-09-30, [B]Wireless[/B] [B]power[/B] [B]transfer[/B] system using
electromagnetic field resonator … US20090284227A1 (en), 2009-11-19 …
[TABLE]
[TR]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=gp&url=https://patents.google.com/patent/US20180083492A1/en&rt=Energy+transmission+apparatus+and+method&scisig=AAGBfm2xxLF0MAaD_M678syawgmZEfojBg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/gp-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=fb&url=https://patents.google.com/patent/US20180083492A1/en&rt=Energy+transmission+apparatus+and+method&scisig=AAGBfm2xxLF0MAaD_M678syawgmZEfojBg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/fb-32.png[/IMG][/URL][/TD]
[TD][URL="https://scholar.google.ca/scholar_share?hl=en&oi=scholaralrt&ss=tw&url=https://patents.google.com/patent/US20180083492A1/en&rt=Energy+transmission+apparatus+and+method&scisig=AAGBfm2xxLF0MAaD_M678syawgmZEfojBg"][IMG]https://scholar.google.ca/intl/en/scholar/images/1x/tw-32.png[/IMG][/URL][/TD]
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