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filter circuit for 866a
filter circuit for 866a
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Old 23rd June 2004, 06:14 PM   #1
Masami is offline Masami  Hong Kong
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Join Date: Apr 2003
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Default filter circuit for 866a

can I use CLC filter behind the 866a?
if it is ok, what is the large value for the first capacitor in the CLC filter?
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Old 23rd June 2004, 09:12 PM   #2
agent.5 is offline agent.5  United States
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Yes. But I am not sure what is the largest value. I use 2uf.
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Old 24th June 2004, 05:40 PM   #3
Masami is offline Masami  Hong Kong
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thanks for your reply
if I use 2uf for the first capacitor,
can I get the DCV = 1.414 x ACV?
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Old 24th June 2004, 07:49 PM   #4
agent.5 is offline agent.5  United States
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I think the answer is no, but I am not 100% sure. Why don't you download the free Duncans amp power designer and enter your paramenters.
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Old 15th April 2017, 09:28 AM   #5
Blitz is offline Blitz  Germany
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I did that and was a vit surprised: If I simulate a 250mA/350V supply with a 30uF-8H-200uF behind it: I am still below the 1A peak current ! Does even lokk better than a gz34... anything I am not getting here ? I thought the 866a really likes only choke-input...?...with only 30ohms at the secondary !

If i apply the formular the formular found here https://www.die-wuestens.de/iz/RECT.pdf

...where they state Mercury rectifiers need at least Rt=V*K/Ip which in this case would be Rt=350*1,57/1...I would have to add a series resistance of more than 500 Ohm !!!

PSUD says something completely different...who is right ?

Last edited by Blitz; 15th April 2017 at 09:34 AM.
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