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Old 30th April 2008, 07:09 PM   #1
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Default Testing 5651WA on the bench

Hi Gang, my regulated power supply uses a cold-cathode regulator. I would like to test this on the bench. Any suggestions as to how?

Here is the spec sheet: http://tubes.mkdw.net/sheets/138/5/5651WA.pdf

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Old 30th April 2008, 10:13 PM   #2
coresta is offline coresta  France
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feed it with a variable psu (50 to 120v DC ) and a 15 k resistor , it should fire at 90 v average and stay at 85/86 even increasing voltage
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Old 30th April 2008, 10:16 PM   #3
kevinkr is offline kevinkr  United States
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Don't go too far over 3.5mA or it could start to get interesting.

I use these as references in most of my supply designs. Generally consistent operating voltage to a couple of 2% and very little drift as long as you operate them at around 3mA.

You cannot effectively bypass one of these with more than about 0.047uF or relaxation oscillations will ensue.
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