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[AMPS] Relays for capacitor switching

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Subject: [AMPS] Relays for capacitor switching
From: philk5pc@tyler.net (Phil Clements)
Date: Tue, 17 Aug 1999 19:57:09 -0500
Hi Carsten
No special relay needed here. I use SPST 30 amp relays here that I
found at an electronic surplus store. They are about 1 X 2 X 2 inches
in size and come in 12 or 24 volt dc coils. The contacts on these are
comparable to the solenoids on the Henry 8K-Ultra, so I knew they 
would take the suds OK.


(((73)))
Phil, K5PC

>Hi,
>
>I'am looking for a couple of relays for switching
>in extra capacitance at the Load capacitor in my
>YC156 Amplifier. The Vaccum cap is a 10..1000 pF
>15KV/80Amp Jennings, and I need around 3000 pF on
>160M and around 1500 pF on 80M. So I need to 
>switch in 1000 pF on 80M and in additioan to that,
>an extra 1500 pF on 160M.
>
>How do I do that ? What type of relay to use ? Maybe its
>way out, but I can get some Contactors with 4 sets of
>contacts, each rated at 25Amp, ofcourse at 50 Hz. I thought 
>of paralleling the four contact sets on each relay. Isolation
>between contact sets/coil is > 4KV. Is it impossible to
>use two relays like this, or do I have to get something else ???
>
>Thanks,
>  Carsten OZ9AAR
>  http://www.magicio.com/cgroen
>
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