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  1. inferno

    Convert 0-30V 3A PSU to 5A or more

    ei! about the schematic ante posted, the Q1's emitter must be connected to 0V... ok?........
  2. inferno

    Frequency Counter

    ei! help me with circuit.. i want to change the semiconductors...will you please suggest a substitute for this.. tnx!! Resistors (all 1/4W 5% carbon film) R1,R9      1k (brown, black, red, gold) R2,R10,R11   470R (yellow, purple, brown, gold) R3,R13      10k (brown, black, orange, gold)...
  3. inferno

    0-20 (3A) and 0-40 (1.5)A Power Supply (Elenco)

    hello!.. i haven't buy this power supply.. i got the schematic somewhere on the net... i want to modify it so that it will produce more current... (read the pdf for more info on the original schematic) pls help me modify it....;) tnx!
  4. inferno

    0-20 (3A) and 0-40 (1.5)A Power Supply (Elenco)

    Here is the schematic..
  5. inferno

    0-20 (3A) and 0-40 (1.5)A Power Supply (Elenco)

    Hello!!! Here is a schematic that I want to modify... I want the 0-20 (3A) to become 5A 0-40 (1.5A) to become 2.5A Any suggestions?.... tnx!!! xp-750.pdf
  6. inferno

    0-30 Vdc Stabilized Power Supply

    ei!! -- is there a short protection circuit here?... when i accidentally short the output terminals, is it ok? what will happen again???.. :) -- how to measure the load regulation and line regulation? ---can i use one transformer rated 30V 10A to X2 of the circuit?... because i will make dual...
  7. inferno

    0-30 Vdc Stabilized Power Supply

    okie!!! tnx mr audioguru!!.. another clarifications: -- about the modified schematic, do you think, theoretically, will it work?... --when i short the Positive and Negative of the output, what will happen? --where will i put again the "power on" indicator?(possible ways) tnx!!
  8. inferno

    0-30 Vdc Stabilized Power Supply

    ei der!! i have read all the posts.. and they modified the power supply... i have a question, where will i connect RV1? to pin 6 and pin 4 or to the Null?... -- just to clarify: - is the emitter of Q1 only grounded? - has anyone tried the unmodified schematic? because someone said in the first...
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