Mike McLane
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    • Mike McLane
      Mike McLane replied to the thread High Voltage Power Supply.
      Ah, replace the 220K w/ a 250K trimmer!?!? Good idea! Sometimes I'm slow on the uptake. Unfortunately I don't think there's enough...
    • Mike McLane
      Mike McLane replied to the thread High Voltage Power Supply.
      Tie the 4K7 & 220K vertically and install a 1K trimmer. Just clip the pin on the "220K side" and instead jumper that eyelet back to Pin...
    • Mike McLane
      Mike McLane replied to the thread High Voltage Power Supply.
      I know space it at a premium, but the trimmer is UBER sensitive up in the desired range. If you use 4K7 as a fixed value and "bias" it...
    • Mike McLane
      (y) Now all I have to do is get those two 1M pots I FORGOT to order 😵‍💫. All dressed up and nowhere to go!!!
    • Mike McLane
      Mike McLane replied to the thread High Voltage Power Supply.
      Why can't they just make this simple!!!!!!! :ROFLMAO: Good info. . . thx!!
    • Mike McLane
      Mike McLane replied to the thread High Voltage Power Supply.
      I figured that from looking at the Space Heater schem & assuming that 250vdc +/- was what you were going for there. As a learning...
    • Mike McLane
      So the points I'm describing are both on the "HV rail side" of the respective components with no other components in the path?
    • Mike McLane
      I have rebuilt my Space Heater starting with a new board. After soldering and cleaning I examined the board for possible solder bridges...
      • Solder side.jpg
      • Print side.jpg
    • Mike McLane
      Mike McLane replied to the thread Blackface Fender layout.
      Sounds pretty good. Actually, I sent it to a friend who is a professional player who is running it through its paces running through a...
    • Mike McLane
      Mike McLane replied to the thread TPA3118 60W Power Amp Module.
      I thought I saw a comment from Chuck Bones many moons ago re: a level of caution using any ol' computer laptop PSU for these. Is this...
    • Mike McLane
      Mike McLane replied to the thread TPA3118 60W Power Amp.
      Roberto, when we gonna see a proper TPA3118 PCB? Inquiring minds want to know. :rolleyes:
    • Mike McLane
      Mike McLane replied to the thread Tube amp immolation.
      Will do. (y)
    • Mike McLane
      Mike McLane replied to the thread High Voltage Power Supply.
      swyse - Probably no worky getting a good reading from the trimmer while its in the circuit. Also, it is VERY sensitive. A slight...
    • Mike McLane
      Mike McLane replied to the thread Blackface Fender layout.
      Do you have any preference for running time based FX before or after your preamps? I am planning on using an HX Stomp for time based FX...
    • Mike McLane
      Mike McLane replied to the thread High Voltage Power Supply.
      Got the HV PSU hooked up to my preamp. Is there a way to replace the trim pot with fixed resistors in order to yield a 250v HV value?
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