The switching frequency of the transformer is 40kHz. Generally, these are noises with an amplitude up to 1V when measuring AC on an oscilloscope The loop is created on the external LM324 operational amplifier, while the internal SG3525 amplifier works as a voltage follower. There are also significant noises at the output as well as sinusoidal oscillations. ![]() In general, the whole works, it is possible to regulate the voltage and current, but there are considerable squeaks of the transformer at low voltages, ie 10V and quite large currents of 10A. I thought it might be a problem with the low choke value, originally 47uH, but then I used the 250uH inductor and it's even harder to stabilize the converter. The problem is the feedback loop, which works unstable. The power block itself is able to give over 800W at maximum PWM and it is not a problem. Designs adjustable Half-Bridge converters with 0-30V and 0-20A parameters. ![]() Hello, this is my first post, I am writing this post because I hope that you will help me solve my problem.
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