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Solid State Relay

post #1 of 7
4/7/10 at 2:20pm
Thread Starter 
I am going to be using a solid state relay with an e24 for my Buffalo II build. I was very pleased with the reference Crydom unit that I used in my Beta 24 build, so I looked at the other units they have and found this:

D1202 Crydom Solid State Relays

It's 2.5A instead of 40A, which will be plenty for the stuff that I'm putting in my Buffalo build. I really like the fact that it's silent, but I'm still wondering if this is an appropriate choice for such a build. Has anyone used this or any other solid state relay for a DAC build before? What do you recommend?

One of the things I noticed is that the minimum load current is 40mA. Is this actually delivered by the relay or just consumed by it? Because a power amplifier may respond differently than a DAC to leakage current coming through it (if this is how it works, I'm not sure.)
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post #2 of 7
4/7/10 at 2:25pm
other than the fact its 10 bucks less is there any advantage to this over the reference one?
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post #3 of 7
4/7/10 at 2:34pm
Thread Starter 
Quote:
Originally Posted by aloksatoor View Post
other than the fact its 10 bucks less is there any advantage to this over the reference one?
The other one was a reference part for the beta 24. The build that I'm choosing for is a Buffalo II DAC. So I have no need for a 40A relay, since the DAC won't use even 1A in normal operation.
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post #4 of 7
4/7/10 at 3:30pm
SSRs need some load current to function, and the higher the rating, the more current it'd need. So if your application is for a low-current circuit, then don't go overkill.
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post #5 of 7
4/7/10 at 4:35pm
Thread Starter 
What about this one?

G3MC-101P-DC12 Omron Electronics Solid State Relays

This looks like it could be driven by the same e24 setup with 12VDC, and it also has the advantage of being a LOT cheaper.
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post #6 of 7
4/7/10 at 6:02pm
It would work, but it's a PCB-mount part which could be awkward to mount on the chassis.
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post #7 of 7
4/8/10 at 4:51pm
I used this SSR as recommended by another Head-Fier in my Buffalo build (and Exstata, for that matter). Very nice little units.
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