BradtheRad
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Today, 05:02Please find0 replies | 66 view(s) -
Yesterday, 13:10BradtheRad replied to a thread Halogen Lamp Limit Resistor? in Service Manuals, Requests, Repair TipsAs Brian says, it's more efficient to pulse the headlight. Nevertheless it's interesting to figure out how to achieve the resistive drop. To send...6 replies | 253 view(s)
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Yesterday, 03:40BradtheRad replied to a thread Multiple AC inputs relay (light PLC) in Elementary Electronic QuestionsThis can be done by putting resistors inline with the input signals. The weighting proportions are achieved by making differing ohm values. Mix them...5 replies | 190 view(s)
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17th August 2019, 22:32It's an idea worth some experimentation. Or to have a potentiometer choose how much comes from a capacitor and how much from an inductor. This...10 replies | 501 view(s)
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16th August 2019, 22:00BradtheRad replied to a thread High power efficiency oscillator topologies? in RF, Microwave, Antennas and OpticsSorry, I wasn't certain as to what waveform you want. This sine wave oscillator has a resonant current loop based on two capacitors and one inductor....14 replies | 412 view(s)
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16th August 2019, 12:55BradtheRad replied to a thread High power efficiency oscillator topologies? in RF, Microwave, Antennas and OpticsMultivibrator, frequency depends on capacitor value. 6pF yields 130 MHz. Output transition is a few volts. Draws about 1mA from 3V supply. ...14 replies | 412 view(s)
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16th August 2019, 06:45By installing a capacitor between the two sources, rapid zero-crossings are detectable. The capacitor produces spikes. However it may also produce...8 replies | 373 view(s)
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15th August 2019, 12:17I do loadpull for the main amplifier at two points: 1. Just before the peaking amplifier turns on and begins to significantly do "load modulation". ...5 replies | 330 view(s)
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15th August 2019, 07:47Install a resistor between the two sources. One source becomes ground for the other source. Measure voltage across the resistor to read differential...8 replies | 373 view(s)
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15th August 2019, 00:04BradtheRad replied to a thread How to add the outputs of a different voltage double ciruits in Analog Circuit DesignRework one circuit so it outputs negative polarity. Connect your load across the two outputs. This method works if the two ground icons represent a...3 replies | 209 view(s)
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14th August 2019, 07:12By adding an inductor to the capacitor, attenuation is not as severe. Because you don't have a resistor involved. For 1-30 MHz range an inductor...10 replies | 501 view(s)
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14th August 2019, 01:04BradtheRad replied to a thread Difference between Differentiators and Comparators in Elementary Electronic QuestionsA differential detector is the input stage of a comparator. A differentiator performs a calculus function, differentiation. Its the counterpart of...3 replies | 151 view(s)
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13th August 2019, 06:17vivekroy replied to a thread How to increase high frequency output power in RF, Microwave, Antennas and OpticsThe curve that circuitking has shared shows a very wide region of operation. Obtaining matching across such a wide range is quiet difficult....5 replies | 247 view(s)
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13th August 2019, 04:15BradtheRad replied to a thread How to increase high frequency output power in RF, Microwave, Antennas and OpticsCan this be solved by impedance matching? Normally that is associated with the goal to maximize power transfer. Input arrives as a combination of...5 replies | 247 view(s)
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13th August 2019, 02:44BradtheRad replied to a thread [SOLVED] voltage and current waveforms spark gap in Elementary Electronic QuestionsFor an example of unusual waveforms in Tesla coils, there's the kind that sings: "Dueling Banjos on musical Tesla Coils"9 replies | 400 view(s)
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12th August 2019, 16:46vivekroy replied to a thread How to increase high frequency output power in RF, Microwave, Antennas and OpticsCan you maybe elaborate on what you mean by "high frequency output power"? If you are referring to higher power at high frequency, then inductive...5 replies | 247 view(s)
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12th August 2019, 16:42vivekroy replied to a thread Using VCVS as delay elements result in period signal rising and falling time changing in Analog Integrated Circuit (IC) Design, Layout and FabricationHave you tried changing the maxstep parameter in your transient simulation?2 replies | 312 view(s)
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12th August 2019, 09:40The ratio of L:C plays a big part in performance. It's not necessarily easy to calculate what ratio is optimum in your application. Ohmic...2 replies | 196 view(s)
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12th August 2019, 09:28A big challenge is to open the housing and find out how to activate the internal switch. Then you must attach wires (very thin gauge) going to your...5 replies | 315 view(s)
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10th August 2019, 23:01BradtheRad replied to a thread [SOLVED] voltage and current waveforms spark gap in Elementary Electronic QuestionsFalstad's animated simulator has a tesla coil in its Circuits menu. The run starts with voltage close to the level where spark occurs (10kV in...9 replies | 400 view(s)
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10th August 2019, 06:02BradtheRad replied to a thread One audio (Stereo ) master transmitter to multple audio reciver. in MicrocontrollersThere are IC's available as the basis for an FM receiver, by adding a few components. LM1800 is an example although I don't know if suits your...11 replies | 634 view(s)
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10th August 2019, 04:03Waveforms through a diode are different, depending on whether your 3-phase is delta or star. It doesn't necessarily change average current, but it...5 replies | 271 view(s)
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10th August 2019, 03:45BradtheRad replied to a thread I am posting dsPIC30f2010 inverter circuits diagrams with PCB proteuse files and HEX in Show your DIYA new attachment may expire unexpectedly. Possible reason: not posted quickly. Try uploading your image again, and submit the post immediately...4 replies | 576 view(s)
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10th August 2019, 01:05BradtheRad replied to a thread Sine PWM calculated with pic, instead of using table in MicrocontrollersThe sine function produces negative values for a portion of each cycle. Does your switching scheme need positive numbers only? Or, does your loop...22 replies | 832 view(s)
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10th August 2019, 00:45BradtheRad replied to a thread Problem with Logitech Audio PCB (No Sound Output) in Hobby Circuits and Small Projects ProblemsThe power supply appears to be at the left edge of your photograph: 4 diodes D1 D2 D3 D4 Two labels 'AC' where wires may be soldered Largest...24 replies | 1285 view(s)
About BradtheRad
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