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  1. P

    0-30 Vdc Stabilized Power Supply

    HURRAY, last problem solved, i have just changed connection of Q1 emitor and all is OK. First part of project completed (second one is adding a digital meter, but that will be another story). Thanks to all who helped me, i will post some photos soon.
  2. P

    0-30 Vdc Stabilized Power Supply

    I use TIP31A, and i have its emmitor connected directly to (-) output of supply, as you suggested earlier in this forum. But thanks, i will repleace Q1 and we will see. Thanks
  3. P

    0-30 Vdc Stabilized Power Supply

    so at last i had time to inspect my supply further, and have little bit more info about turn-off peek, i have repleaced C1 (dont know if it was defective or not, i have just repleaced it, now it is 10 000 uF / 63V) , but i have also discovered, that if the voltage regulator is set to 4,5V or...
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    0-30 Vdc Stabilized Power Supply

    Thanks for explaining negative circuit, about the peek problem, i have checked all components in negative part, all is ok including 82 ohms R2. I have also done little experiment, i have connected LED to output of PSU, set voltage to about 1,8V, all is fine, LED is ligting, then i have switched...
  5. P

    0-30 Vdc Stabilized Power Supply

    Hi everyone, i have just finished this supply, i have used all modifications mentioned in this forum except change of opamps. Btw, doubled 2N3055 is REALLY good idea. All is working fine, i have only one problem and don't know if it is problem in construction or in design. If i turn the PSU on...
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