Electronics > RF, Microwave, Ham Radio

RF Triode Filament Monitoring Circuit

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K1JOS:
Thank you for the clear explanation.  I am digging further into the schematics to see how the designers monitor and create protection faults for out of range plate HV, plate current, etc.  Looking at this in a real working amplifier is the best way for me to learn new things otherwise theory becomes too abstract.

Jerry NY2KW

AF6LJ:
Just be careful there are voltages in there that can kill you dead'er than a hammer...

dave_k:

--- Quote from: AF6LJ on April 08, 2016, 06:50:32 pm ---RF tends to get places you don't want it, even when you have a board and a sub chassis that are connected with a common ground. The ground wire can pick up RF internal to the amplifier and that can be problematic.

Without seeing the internals that is my best educated guess.

--- End quote ---

There are 2 different ground symbols on the schematic, so there might be 2 different grounds used in the equipment.

AF6LJ:
Indeed.  :-+

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