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  1. L

    0-30 Vdc Stabilized Power Supply

    Thankyou very much audioguru for helping me. I shorted the output , the new and good 2n3055 burned instantly but it was cold! I don't know what to measure so that I could see if the current regulator works. If I will not be able to fix my actually power supply, I think I will build the power...
  2. L

    0-30 Vdc Stabilized Power Supply

    My first 2n3055 has burned out. I used a new one but IT WAS BROKEN. I checked the voltage at pin 6 of U1 ad it was 11.27V (no Q4). The voltage across R5 and R6 is 5.6V. Audioguru, would you like to tell me what checks should I do to see if something else has broken?
  3. L

    0-30 Vdc Stabilized Power Supply

    Hello, First, sorry for my english... :-[ I am new to electronics-lab forum and a beginner. I've built this power supply and now I have a problem. When I connect Q4, the output is 17V . When Q4 isn't connected the output depends on p1 and it varies from 0V to 34.6V. With Q4 conected the voltage...
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