Easy peasy
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Today, 01:15Easy peasy replied to a thread Half-bridge versus Full-bridge for Power Dense supplies? in Analog Circuit Designtransformer design will be critical here - better to rectify 5 x 1kV outputs and series, LCC 1/2 bridge would be my choice ...3 replies | 74 view(s) -
Yesterday, 20:42Easy peasy replied to a thread Failed MOSFET in switch mode power supply for an audio mixer in Power Electronicsmore heatsinking - or a fan ( perhaps small internal one ) are good ideas ....3 replies | 82 view(s)
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Yesterday, 20:34Easy peasy replied to a thread Half-bridge versus Full-bridge for Power Dense supplies? in Analog Circuit Designthe highest possible power density ever ... ? What is your max Vout ? - this will limit the power density 1/2 bridge is fine for resonant...3 replies | 74 view(s)
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Yesterday, 20:28Has the OP tried with batteries to see if the noise goes away?36 replies | 702 view(s)
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Yesterday, 20:26Easy peasy replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and InterfacingWas it ever disclosed if the original offending cap was a tantalum type?38 replies | 570 view(s)
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Yesterday, 20:23Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects ProblemsCorrect - the effect of the 100 ohm base current limiting resistor is to make the emitter follower ckt impractical - a properly driven...38 replies | 1047 view(s)
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25th June 2019, 11:21Yes 200R pot should be 100k-ohms 470nF cap should be 4.7nF else you will attenuate a lot of the music frequencies ...36 replies | 702 view(s)
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25th June 2019, 10:33It would be instructive to try with a battery ( and vol pot turned to zero) to see if the noise was quieter compared to the Meanwell power supply -...36 replies | 702 view(s)
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25th June 2019, 06:18Easy peasy replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and Interfacingcorrect - in both pcb's the gnd copper appears to have no connection to the pcb push on connector ...38 replies | 570 view(s)
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25th June 2019, 01:44Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects Problemsthe original ckt will be very power limited, at 15VDC in you will be lucky to get +/- 4V across the Tx pri at no load - the volt drop across the...38 replies | 1047 view(s)
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24th June 2019, 22:13Easy peasy replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and InterfacingI agree the source power supply is likely spiking up when some or all of the relays turn off, a 5W 18V zener should cure it ...38 replies | 570 view(s)
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24th June 2019, 21:56Easy peasy replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and Interfacingsorry, wwfeldman, this is not quite correct - capacitors carry AC and spike currents - some times quite large currents, a 10uF cap going...38 replies | 570 view(s)
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24th June 2019, 21:43Easy peasy replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and InterfacingIs it - or was it - a tantalum capacitor? these are famous for failures else a high capacitance SMT part with an unknown dielectric - ...38 replies | 570 view(s)
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24th June 2019, 21:38Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects Problemstry ali-express for NJW0281 & 0302 ... 1000's there ... but yes the schematic has never been built and tested - otherwise the originator...38 replies | 1047 view(s)
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24th June 2019, 21:34Easy peasy replied to a thread Using Patent Ideas for Next Product in Elementary Electronic QuestionsTwo approaches: 1) find a patent holder and use their design, offer them a modest fee / royalty - it then becomes their problem to defend...6 replies | 222 view(s)
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24th June 2019, 18:03In scope, channels should be set to DC measurement. In your setup, all channels are set to measure AC.15 replies | 230 view(s) -
24th June 2019, 08:53Easy peasy replied to a thread Using Patent Ideas for Next Product in Elementary Electronic Questionsyou need to hire a patent attorney, patents last 18-20 years, they can be modified and a new patent issued to take account of the modification - ...6 replies | 222 view(s)
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24th June 2019, 08:49Easy peasy replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and Interfacingwhere is the 10uF cap on the board ...?38 replies | 570 view(s)
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23rd June 2019, 21:56If the power supply rails are "noisy" this may well translate to noise at the output - you mentioned the 12V power was from a meanwell power...36 replies | 702 view(s)
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23rd June 2019, 02:45unfortunately Mr Rutman, the simple ckt you propose will have shoot thru issues at every transition - at least you can turn this one off ...13 replies | 262 view(s)
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23rd June 2019, 01:49Easy peasy replied to a thread Saturation current of coupled inductor used in flyback smps in Power Electronicsyou can also use a standard transformer and put parallel inductance on the o/p winding ...3 replies | 117 view(s)
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23rd June 2019, 01:10getting 400VA out of a voltage multiplier will be a difficult process with high peak currents in the diodes and caps - but you are welcome to try...38 replies | 1660 view(s)
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23rd June 2019, 01:04noise is inherently wide band - there is no notching it out - most noise "filters" are low pass filters, I'm sorry I can't clarify further...36 replies | 702 view(s)
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22nd June 2019, 21:21yes, you may want to try a 2k2 - 10k res in series with the 100pF too, on the LHS of the cap ...36 replies | 702 view(s)
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22nd June 2019, 21:18Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects ProblemsIn the OP's ckt there is no attempt to modify the square wave into a sine wave, the DC blocking cap biases itself to 6V under normal operation - ...38 replies | 1047 view(s)
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22nd June 2019, 09:20Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects Problemsa cmos 555 will drive mosfets pretty well - esp at 50/60 Hz, so I imagine a bipolar one will too ... they just don't last due to the inherent...38 replies | 1047 view(s)
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22nd June 2019, 06:22try shorting the input and vary the volume pot from zero to full - if the noise is there and much the same as you vary the pot - then the noise...36 replies | 702 view(s)
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22nd June 2019, 01:33Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power ElectronicsWe look forward to some full power wave-forms..! - when the Batt is < 11 volts, the turn off Vds looks good - by which I mean there must...70 replies | 2121 view(s)
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22nd June 2019, 01:28Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects ProblemsOverall the circuit is a poor one, even a bipolar 555 would have trouble providing the base currents needed ( compared to a cmos one - 10mA if...38 replies | 1047 view(s)
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21st June 2019, 21:07Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects Problemsfor some one called Audioguru - I am surprised at your statement - if you look closely you will see the xtors are not in saturation - The Vce...38 replies | 1047 view(s)
About Easy peasy
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- Power Electronics
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- founder MagnetPowerNZ Ltd & Pwrtrnx.com
- Occupation:
- engineer
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