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Re: PFC Caps (Was RE: I need a bigger variac. (fwd)) (fwd)
---------- Forwarded message ----------
Date: Sat, 20 Dec 1997 14:38:48 MYT
From: Sulaiman Abdullah <sulabd-at-hotmail-dot-com>
To: tesla-at-pupman-dot-com
Subject: Re: PFC Caps (Was RE: I need a bigger variac. (fwd)) (fwd)
I've seen many references to 'Motor-start' capacitors for use as PFC's
'Motor-start' capacitors are non-polarised Aluminium electrolytic,
and are intended for low duty-cycle use, e.g. 6 'starts' per minute.
'Motor-run' capacitors which use Mylar are rated for continuous use,
a MUCH safer choice.Comments ?
... Sulaiman
>Date: Fri, 19 Dec 1997 12:17:26 -0700 (MST)
>To: tesla-at-pupman-dot-com
>Subject: Re: PFC Caps (Was RE: I need a bigger variac. (fwd)) (fwd)
>From: Tesla List <tesla-at-pupman-dot-com>
>
>
>
>---------- 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
>
>
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