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[AMPS] SB-1000 mods?

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Subject: [AMPS] SB-1000 mods?
From: (Tom Rauch)
Date: Mon, 10 Sep 2001 13:16:39 -0400
> In any case, the glitch resistor is one of those components that needs
> to be located in a cooling air stream.
> Any idea how to get hold of these resistors in small quantities  at
> reasonable prices? Now it's Monday, is somebody gonna call 

I'd suggest people check manufacturers. I'm sure many have stock 
components that will do.

For example, Ameritron has a variety of globar resistors and also a 
400 joule 13 watt dissipation 1500 volt 10 ohm resistor as a 
standard component. A series combination of 10 ohm resistors 
would be a fairly inexpensive solution.

The resistance actually needs to be selected by the ruggedness of 
other components, not just by voltage. For example, a 4CX5000 
can take a big current whack compared to frail small tube like a 
4CX800. With the 4CX5000, your biggest worry is other 
components like RF chokes and screen regulation systems.

I don't think X ohms per volt is a good rule, although I suppose it is 
better than nothing.

73, Tom W8JI 

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