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Old 16th June 2004, 10:50 PM   #1
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Default A new/old CCS?

I was poking around the web trying to figure out what to do about a time on delay for the PSU of my linestage and I came across this:

http://www.amperite.com/Uploads/Ballasts.pdf

I wonder if this could be used as a CCS in a tube amp? Interesting.
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Old 17th June 2004, 12:01 AM   #2
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Hi,

Gavin,

IIRC those where meant for heater circuits among other things, not high voltages.

Cheers,
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Old 17th June 2004, 12:32 AM   #3
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Hi Frank. I figured as long as you didn't drop more voltage across them than they are rated for you would be OK. Just something I found while poking around. You would have to be careful when biasing the power tube though. Cheers
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Old 17th June 2004, 03:34 AM   #4
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Hi,

These where sometimes used to drop voltage in series connected heater strings but I have seen them used in high voltage constant current circuits also. If I remember correctly they consist of a plain iron wire in hydrogen gas. They have not so high Ri and the current regulation is very slow so I dont think they can be used as CCS in an AC circuit.

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