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High voltage MOSFET in Marshall Haze

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  • #16
    Well, if you use those wimpy voltages you might certainly need neon lamps.
    In *MY* experiments you know for sure the preamp is on:

    he he.
    Juan Manuel Fahey

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    • #17
      That thing built in a speaker cone?

      Super-tweeter indeed.


      And: you ought to see what it does when I hit the boost!!!
      Education is what you're left with after you have forgotten what you have learned.

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      • #18
        This is what mine did the last time I hit the boost.
        "Enzo, I see that you replied parasitic oscillations. Is that a hypothesis? Or is that your amazing metal band I should check out?"

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        • #19
          I love those EPRO-M-OSFETs and their cute tiny windows which let you see their *real* inner self.
          Remember to cover it, though, or that MOS might be "erased" by accident.
          EDIT: please do not take this as criticism but a well intentioned suggestion: don't you think you should try to hold those Mosfets in a somewhat stronger way?
          You know, real macho bolts and nuts, those you used look wimpy to me.
          I have some spare OEM Railroad Rail bolts I might send you.
          You'd only have to enlarge the mounting hole a little, with a 1" drill (or a jackhammer if you feel safer using that).
          Just a thought.
          Juan Manuel Fahey

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          • #20
            Ah, too late, it already got erased by accident.

            The same 3300uF inverter grade capacitor charged to 400V works quite well on EPROMs too.
            "Enzo, I see that you replied parasitic oscillations. Is that a hypothesis? Or is that your amazing metal band I should check out?"

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            • #21
              I see the problem from here. Damned metric screws. They'll blow things up every time.

              RoHS - Removal of Hot Silicon.
              Education is what you're left with after you have forgotten what you have learned.

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