[Amps] Crydom Solid State Relays

[Johnnie Walker]

Hi Paul,

What would be typical values for the cap/res combo?

73/jeff/ac0c

Paul Kraemer wrote:
> 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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>
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