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In Reply to: RE: There are no issues with the filamnent winidngs in the leak amps. posted by Tre' on April 03, 2016 at 18:30:11
How about that? My friend has given me few pieces Continental Capacitor 30uf 650v oil filled cap for the position after the rectifier tube and suggested I put 2 x 50uf 600v after the choke.
The oil cap can mount insider the chassis and those 2 x 600v capacitor to fill the holes on the chassis.
Is that ok??
Follow Ups:
What value was the input cap (c14) to start with?I wasn't trying to dictate what you can and can't do.
I was trying to point out that physics dictates what you can and can't do.
It all depends on the AC plate voltage, current and the value of the limiting resistance.
When people point out the the data sheet states 60uf as the max value for he input cap, I was just trying to point out that 60uf is only allowable under certain conditions.
Under different conditions the max uf will be different.
The conditions for using 60uf are given in the graph on page 4 of the pdf linked below.
You can use PSUD2 and see if the max plate current rating of the rectifier tube is being exceeded.
Here's an example where 60uf causes a peak current of 810ma exceeding the max rated 750ma because the limiting resistance is too low for the conditions.
Here's an example where 30uf causes a peak current of 934ma exceeding the max rated 750ma because the limiting resistance is too low for the conditions.
Here's an example where 70uf is fine and the rated peak current of 750ma is not exceeded because the limiting resistance is sufficient for the conditions.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 04/04/16
As says, my friend has sold me some Continental capacitor type A 30uf 650v for this position.
Then I might use 2 x 50uf 600v in parallel (total 100uf) after the choke.
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