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  1. K

    considerations in replacing transistors???

    what parameters do I need consider in replacing transistors? my idea... please tell me if i'm wrong Vceo must be greater than or equal than the original. Ic must be greater than or equal than the original Power dissipation must be greater than or equal than the original. Frequency range -- no...
  2. K

    Quick questions about transformers

    I just bought a transformer; multi-tapped 0-6-12-24, 12 Amp. Does it mean it can go up to the max 24 volts rms - 12 Amp ??? What's the min filter capactior value if used as a dc power supply? ( big capactors are expensive >.< ) Some transformers are rated in VA, what does it mean?
  3. K

    Comment about this design...

    http://www3.telus.net/chemelec/Projects/Power-Supply/Power-Supply.htm schematics: will it work?
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