[Amps] Crydom Solid State Relays

[Paul Kraemer]

There is the Quencharc but they are pricey. Just make your own using 630wvdc 
poly caps and 1/2 watt resistors.
Give me a load you are working with and I can point you in right direction 
for calulating values.
Paul K0UYA
----- Original Message ----- 
From: "Tim Duffy K3LR" <k3lr at k3lr.com>
To: "'Alex Eban'" <alexeban at gmail.com>; "'AMPS'" <amps at contesting.com>; 
"John Lyles" <jtml at losalamos.com>
Sent: Thursday, January 29, 2009 1:19 AM
Subject: Re: [Amps] Crydom Solid State Relays


> Is there a suggested Mouser available "snubber" capacitor R/C combo that 
> has
> worked well?
>
> Maybe you or John know the correct part for us?
>
> Thanks
> 73,
> Tim K3LR
>
> -----Original Message-----
> From: Alex Eban [mailto:alexeban at gmail.com]
> Sent: Thursday, January 29, 2009 1:10 AM
> To: k3lr at k3lr.com
> Subject: RE: [Amps] Crydom Solid State Relays
>
> ...the Crydoms are "quieted" inside, so they don't need RFI protection!
> However, I would warmly recommend to include a snubbing capacitor across 
> the
> power pins just like you do with regular relays.
> This is meant to prevent switching transients from "roasting" the power
> section of the relay.
> Alex 4Z5KS
>
> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
> Behalf Of Tim Duffy K3LR
> Sent: Thursday, January 29, 2009 7:27 AM
> To: 'Bob Maser'; 'AMPS'
> Subject: Re: [Amps] Crydom Solid State Relays
>
> Hi Bob:
>
> I have used Crydom SSR relays in AC ON and step start circuits for 15 
> years
> with no special bypassing. No problems at all with this set up.
>
> 73,
> Tim K3LR
> http://www.k3lr.com
>
>
> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
> Behalf Of Bob Maser
> Sent: Wednesday, January 28, 2009 7:08 PM
> To: AMPS
> Subject: [Amps] Crydom Solid State Relays
>
> The power supply of my new amplifier will be using 3 40A Crydom SSR 
> relays,
> One on each leg of the 240VAC and another in one leg to short out the step
> start resistor.  I have been planning on using the SSR's w/o any resistors
> or capacitors across the control connections but I have been advised that 
> I
> should put resistors and capacitors across the control connectors to 
> prevent
>
> RF from affecting the SSR function and possibly causing "chatter".   I 
> would
>
> appreciate some feedback from the group.  I don't believe that Jerry
> Pittenger K8RA used anything in the 3CX1500D7 amp that was featured in the
> 2006 ARRL Handbook.
>
> Bob Maser  W6TR
>
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