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inrush limiter

  1. tutor_turtle

    SA-300 inrush limiter question

    I have a heavily modified SA-300 from a top notch tech in Canada (Sams Audio). The rework is some of the best I've seen. All caps, rectifiers, sockets.. the works all neatly laid out. There issue is the GZ34 rectifier tubes are intermittently sparking on startup. New tubes did not solve the...
    • tutor_turtle
    • Thread
    • fisher gz34 inrush current inrush limiter sa-300 thermistor tube audio
    • Replies: 6
    • Forum: Fisher
  2. Carbsandcaps

    Inrush current limiters, my thoughts and yours.

    As I watched my fisher tube amp short out, zap like a welder for a full second and literally catch fire for a short time the other day due to a stray wire shorting B+ to ground the fuse did eventually blow but it got me thinking. I think a fast blow fuse is the better option for basically...
  3. thorpej

    Selecting a NTC thermistor inrush limiter

    Sorry folks, not strictly a tube audio issue, but my assumption is that folks here have some experience with it. The amp design I'm working on will have a B+ current draw of approximately 450mA (that's rounded up) at full power. At idle it's going to be around 240mA (again, rounded up). B+...
    • thorpej
    • Thread
    • inrush limiter power supply thermistor
    • Replies: 44
    • Forum: Tube Audio
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