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germanium transistors

  1. S

    Rotel by Martel 100AMP

    Anybody know anything about this little Amp? Service manual or schematics? found nothing in the usual places. It looks similar to a Rotel RA-310 but very different inside. I have acquired a ROTEL by Martel model 100AMP integrated amplifier that was made 1967 - 1969. It appears to be all...
  2. Z

    Replacing silicon with germanium

    Would it be ok to replace the output transistors in an amplifier with germanium ones? If it is, would the emitter resistors need to be increased in order to compensate for the lower voltage drop? I would like to possibly re-transistor a Crown D-75 amplifier. Thank you Edit: Fix typo
  3. T68

    Experiences with "zapping" whiskers in germanium transistors

    Hi! I may be into a whisker situation with some germanium trannies in an old console. Since replacements are hard to find and a bit expensive when they turn up, I thought I would try to burn the whiskers using a charged capacitor and short the shield to the rest of the legs, according to some...
    • T68
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    • germanium transistors whiskers
    • Replies: 0
    • Forum: Solid State
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