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Recent content by NantachieRat

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    High Voltage Regulator Circuit Help

    They don't bother me! I am down to 145 MA wide open, this is the point where voltage begins to fall off rapidly with any increase in current. I am looking at a working load of 60 to 70 MA. I have a schematic I'd like you to look at, it is a vacuum tube type regulator for high voltage tube...
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    High Voltage Regulator Circuit Help

    about 500 MA.
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    High Voltage Regulator Circuit Help

    Do you mean use a transistor as a series switch and configure the coil and cap as a choke input filter?
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    High Voltage Regulator Circuit Help

    I am working on a power supply for vacuum tube circuits. It is a full wave voltage doubler with an input of 120 Vrms fron the transformer secondary. It gives a B+ of 330 Vdc. I need a regulator circuit to be able to get a B+ of 125 to 250 volts. I have several high voltage transistors and I was...
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    NRI Model W VTVM

    This is a National Radio Institute model W VTVM that was given to me by a retired Navy Veteran. I was going to just leave it on a shelf for display, but then I got to thinking, does this thing work?? And I bet I could fix it if it doesn’t! Well, it works! Now all I need to do is replace the...
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    Conar Mod. 250 & NRI Mod. W

    I have a Conar Mod. 250 scope and a NRI Mod. W VTVM and I need schematic diagrams and any other information anyone has on them. I have a wealth of “e debris” and tube info I can share as well as some of that newfangled solid state stuff. Maybe I can help you too!
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