BradtheRad
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Today, 08:45BradtheRad replied to a thread VFD to control 3 phase AC induction motor 400V 6000 rpm in Power ElectronicsYour motor's windings dictate whether you shall wire the power supplies as a delta or as a wye. Create the full 3-phase simulation to see if any...4 replies | 129 view(s) -
Yesterday, 03:49CML = current-mode logic?2 replies | 149 view(s)
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19th March 2019, 11:08BradtheRad replied to a thread [SOLVED] ON/OFF controller IC with retaining its state after power resume in MicrocontrollersPossibilities for storing status during power-off: * A one-bit 'core' computer memory. A tiny ferrite donut has wires going through it. Magnetize...9 replies | 160 view(s)
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19th March 2019, 09:42BradtheRad replied to a thread Color sensor and Basys3 with VHDL in PLD, SPLD, GAL, CPLD, FPGA DesignDo you have a technique in mind that distinguishes between a red light or green light?3 replies | 140 view(s)
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18th March 2019, 05:25BradtheRad replied to a thread Where can I get my transmitter/microwave link tested in RF, Microwave, Antennas and OpticsA Ham radio set often is a lifesaver in times of emergency. Or else it can be called 'micropower' broadcast. (Those names sound better than...1 replies | 125 view(s)
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17th March 2019, 05:44BradtheRad replied to a thread 3 phase 400Vac 5000W Full bridge converter power factor correction Buck or Boost type in Power ElectronicsThe rectified output is (in a manner of speaking) two split (bipolar) supplies. Together they create a voltage doubler to the 5kW load. Then as...34 replies | 951 view(s)
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16th March 2019, 07:36Sorry, I stated wrong. Instead... Given an amplitude value, divide by your desired maximum. The result is a proportion which gives you the relative...12 replies | 446 view(s)
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15th March 2019, 01:54Do you mean a circuit which compares two unknown volt levels? A differential amplifier is used. Usually a long-tail pair does this job. You may need...1 replies | 145 view(s)
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15th March 2019, 01:19BradtheRad replied to a thread artificial Intelligence with plants in Heuristic methods, Machine Learning, AI, and Soft ComputingAn easier project might be to detect when fruits or vegetables are ripe. The camera should detect color, or else it should take multiple shots...2 replies | 405 view(s)
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15th March 2019, 01:09BradtheRad replied to a thread Full bridge converter, how to improve crest factor. in Power ElectronicsYour schematic appears to apply a modified sine wave to a series LC. I've played with similar simulations in a hope to find an easy way to regulate...5 replies | 308 view(s)
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14th March 2019, 07:29Perhaps the 3 sources influence each other in such a way that you can detect. Possibilities: * zero crossings * voltage waveforms * Ampere...16 replies | 635 view(s)
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14th March 2019, 02:15The numeric values in digitized audio (such as wav format) are amplitude readings. If you plot the numbers, the waveforms resemble what you'd see if...12 replies | 446 view(s)
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13th March 2019, 17:00Tusharsinh started a thread Warning: Save can not be completed in PCB Routing Schematic Layout software and SimulationCommand is not currently active and save can not be completed at this time.How to solve this warning in Altium?2 replies | 130 view(s)
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13th March 2019, 12:47BradtheRad replied to a thread Designing a simple Isolated DC/DC converter in Elementary Electronic QuestionsAbsolutely right. It has inductors instead of capacitors. To make a 5v to 5v power supply, a buck-boost can do the job. However it inverts supply...8 replies | 402 view(s)
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13th March 2019, 10:36This attachment expired prematurely. Please post the diagram again, and submit your post quickly after uploading your image. - - - Updated - - - ...5 replies | 242 view(s)
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13th March 2019, 02:49I want to use MMBTA2222A as switch. Its hfe = 40 (min.), Vcc = 5V, Base input voltage is 14V. Series base resistor value i have calculated, But...4 replies | 204 view(s) -
12th March 2019, 09:21BradtheRad replied to a thread how they simulate this 3 stages amplifier? in RF, Microwave, Antennas and OpticsThe common emitter arrangement is typical in a Class A amplifier. In case a simulation will help, here is a basic amplifier providing over 200 gain....9 replies | 448 view(s)
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12th March 2019, 02:55With a flyback it's very easy to generate high voltage spikes. The reason is because you're abruptly shutting off current through an inductor (in the...4 replies | 310 view(s)
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11th March 2019, 23:03BradtheRad replied to a thread Detect Reverse Polarity of Coil in Professional Hardware and Electronics DesignWith 10 turns it might be enough to influence a compass needle. Try a known coil with the compass, then compare the effect of the unknown coil.3 replies | 518 view(s)
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11th March 2019, 08:10BradtheRad replied to a thread Help Needed to repair a CRT + pictures and info about the problem. in Tubes and RetroThis could be important since the sound might be high voltage arcing near the led. Suppose it's not the led at fault but intermittent cutoff of the...14 replies | 1289 view(s)
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11th March 2019, 07:32BradtheRad replied to a thread Measuring a voltage that is higher than supply voltage in Analog Circuit DesignSome small amount of current needs to flow. Install a pulldown resistor, say between 50k and 500k ohm. - - - Updated - - - At left: No...14 replies | 512 view(s)
About BradtheRad
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- Born 1953. Some college.
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