[Johnson] AC bypass capacitors

[Sherrill Watkins]

Jon: If my memory serves me, the AC main bypass capacitors should be the
nonpolarized disc ceramic type, and rated at approximately ten times the peak
to peak AC line voltage. Install them with as short a lead as feasible and
the lead that connects to the AC main should have an insulating sleeve
installed to protect against a possible short circuit to the chassis. A 1500
volt rated disc ceramic type should work ok. My Valiant uses 0.005 mfd value
on each side of the AC main but 0.001 may work just as well and reduce the
possibility of low voltage AC from developing between the chassis and ground
because of the reactance of the capacitor.  -73- Sherrill W. k4own. 

-----Original Message-----
From: K6JEK [mailto:k6jek at comcast.net] 
Sent: Monday, October 18, 2004 5:09 PM
To: johnson at mailman.qth.net
Subject: [Johnson] AC bypass capacitors


What's the right way to bypass the AC mains?

I remember a definitive post on this bulletin board on what sort of 
caps to use, what not to use, where to put them and where not.  But I 
can't find the post.

Thanks,

Jon

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