• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

matched transistors

  1. A Sound Mind

    HK 730 Output Transistors

    I'm restoring this receiver and pulled the output transistors for testing and to apply new sil-pads and compound. It uses 2SB541 and 2SC388.matched pairs. I tested them on an auto tester and they id'd correctly, but their hfe results were far below spec. Does this mean that they're tired and...
  2. oldvinyldude

    Testing and matching of transistors

    I am wondering how many transistors does one typically need to purchase, to get a 'matched' pair. With some amp designs relying on careful matching to achieve proper and balanced performance, I am looking for members experience. If I need a pair, how many transistors should I need to buy, in...
    • oldvinyldude
    • Thread
    • matched transistors transistor tester
    • Replies: 19
    • Forum: DIY
Back
Top Bottom