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Testing 5651WA on the bench
Testing 5651WA on the bench
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Old 30th April 2008, 06:09 PM   #1
d1camero is offline d1camero  Canada
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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, 09:13 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, 09:16 PM   #3
kevinkr is offline kevinkr  United States
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Testing 5651WA on the bench
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.
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
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