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Re: PFC Caps (Was RE: I need a bigger variac. (fwd)) (fwd)
---------- Forwarded message ----------
Date: Fri, 19 Dec 1997 13:37:33 EST
From: Esondrmn <Esondrmn-at-aol-dot-com>
To: tesla-at-pupman-dot-com
Subject: Re: PFC Caps (Was RE: I need a bigger variac. (fwd)) (fwd)
In a message dated 97-12-19 09:39:10 EST, you write:
<< Ed,
What kind of caps are pfcs? are they specifically designed for this
purpose or just standard caps with the correct values. You also speak
in the plural. If there is more than one could you describe the
topology?
Thanks
>
>Russ Thornton >>
Russ,
PFC caps are just AC capacitors like are used for motor start capacitors on AC
motors. I guess I used the plural (caps) because I always end up using a
couple in parallel to get the right values.
Typical values for 120 Volt input neons at 60 Hz are:
30 60 90 120
9000 25 50 75 100 uF
12000 33 67 100 133 uF
15000 41 83 124 166 uF
This table is courtesy of Fr. Tom McGahee.
Ed Sonderman