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I teared down Samsung Charger USB, and traced the circuitry trying to study it's theory of operation. but I couldn't. It's of course 220V AC to 5V DC. Can anyone help me understanding it?
I'm working on induction furnace project,, I'm facing a serious problem with my toroid transformer. As you may find in the attachment Pic, There's green toroid with 20 Turns, which transfer the current from 1500 Hz inverter to LC tank which in turn works in resonance. The problem is the core...
upper waveform is the output voltage, and lower is the output current. as u can see ,, there's large spikes over the current,, it's measured over 0.1 ohm in series with 40 ohm load.
that's the gate pulse for mosfet number 1 ,, and all pulses are well shape like that one.
everytime I try to...
I'm using already high freqency optocoupler,, 6n135 ,, and yes I have dead band 14us which is pretty much long time in my case. plus I only used 30Vdc till now with maximum output current on resistive load 3 ampere
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when i tried smaller resistance in range 100 ohm ,, the...
Recently I'm working on project of induction heating,,, I have H-bridge inverter, the mosfets which i am using is 20n60c3, my switching frequency is 1.5khz, i need to increase voltage level to as maximum as i could ,,, but i started experimenting with 30 Vdc over resistive load of 40 ohm, I was...
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