Recent content by MonSSter

  1. MonSSter

    0-30 Vdc Stabilized Power Supply

    r2 is 82ohms, also nothing is shorted ... maybe this will help .. c3 voltage is also 0, and c2 is 17.7V(but as you said, there's AC not DC )
  2. MonSSter

    0-30 Vdc Stabilized Power Supply

    i replace d5 and d6, and nothing ... i measure as you said and i got the same measurement's ... that's d5 has 0v, r3, d7 has around 0,7v ... so i realy don't know now :( ... you think i should start all over again?
  3. MonSSter

    0-30 Vdc Stabilized Power Supply

    yep ... many many times :D
  4. MonSSter

    0-30 Vdc Stabilized Power Supply

    well replacing D7 did nothing new ... so i measure the voltage on r2 where there is 17.7V, and on D5 there's 0V(?!) ... any ideas?
  5. MonSSter

    0-30 Vdc Stabilized Power Supply

    ok i belive that diodes are dead or something, because on d7, theres 0.7V .. so i will replace them during the weak and then report again .. tnx!
  6. MonSSter

    0-30 Vdc Stabilized Power Supply

    ..and what are the parts for negative voltage?
  7. MonSSter

    0-30 Vdc Stabilized Power Supply

    r13 has ~34V ... and r14 has 0.8-0.9V ...
  8. MonSSter

    0-30 Vdc Stabilized Power Supply

    Hi! exams are over, so i can finish the power supply now ... i think i located the problem and that is the voltage on q1, collector is 0.8~0.9V so i'm asking if that could be the problem( i have no output )
  9. MonSSter

    0-30 Vdc Stabilized Power Supply

    ..and how did you do that?
  10. MonSSter

    0-30 Vdc Stabilized Power Supply

    well . . the output voltage of u2 is the same as before thats .. around 200mV and he's still very hot. The u2 is tl081
  11. MonSSter

    0-30 Vdc Stabilized Power Supply

    hmm .. I replaced q4  and u2(q2 looks ok)disconeted the r15 but nothing happend... output was i bit higer that's all ... so the thing still doesn't work :D ... any new directions(maybe you draw me the solution :)). Tnx eemmm ... q4 C = 34V, E = 0,5V B = 0,5V
  12. MonSSter

    0-30 Vdc Stabilized Power Supply

    helow! it's me again :) .. well i replace the Q2 and the u2(new one is still heating like mad) and now the output voltage is ~0.4V .. the voltage in q4 E,C and B is 32V+ ... so what is wrong now?
  13. MonSSter

    0-30 Vdc Stabilized Power Supply

    ok .. will go and replace these componets and then report :) .. thx
  14. MonSSter

    0-30 Vdc Stabilized Power Supply

    well ... i changed the orientation of the Q2( so that the emitor is pointing towards 8th pin( the base of Q4 ) ) and now the situation is following ... output voltage is 0.5V, u2 is still heating like mad ;), the voltage on Q2 collector is ~34V ... Q4 base volt.  = 0,5V       collector volt. =...
  15. MonSSter

    0-30 Vdc Stabilized Power Supply

    i do use 24 transformer. the 6pin on U2 shows ... 0V, and the Q2 shows 34V ... so you think that Q2 is destroyed?
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