[GreenKeys] Solid State Motor Control Relay

[ad7i]

Thanks John.

Paul


On Sun, Dec 27, 2020 at 10:22 AM w9ddd at tapr.org <w9ddd at tapr.org> wrote:

> The TU-170 uses a SSR.  Unfortunately, the parts list doesn't even list
> it, so I can't tell you much about it, except it is physically smaller than
> the eBay one you referenced.
>
>
> John, W9DDD
>
>
> On Dec 27, 2020, at 4:39 AM, ad7i <ad7i at ad7i.net> wrote:
>
> Greetings Greenkeyers --
>
> Has anyone tried to use a Solid State Relay (SSR) such as that shown below
> to control a TTY motor?
>
>
> https://www.ebay.com/itm/1Pcs-Solid-State-Relay-SSR-40DA-SSR-25DA-3-32VDC-TO-24-380VAC-New/312717019695
>
> I'm using two of these solid state relays on dehumidifiers in my basement,
> so that the safety switch in the condensate pump can interrupt the AC power
> to the dehumidifier if the pump can't pump.  The SSR's electronic
> "contacts" have the equivalent of two diode drops in series with them, so
> that at 1 ampere of AC current passing through the relay contacts will
> dissipate about 1.5 watts.  I have my humidifier SSRs mounted on a small
> heatsink but I think it's overkill for that application.
>
> But I'm wondering if SSRs, in general, would be suitable for a TTY motor.
>
> The alternative for me is an old school mechanical contact relay, in
> particular:
>
> https://www.mouser.com/datasheet/2/418/5/NG_DS_T9G_1216_1117-1281449.pdf
>
> Please let me know what you think about using an SSR for a TTY motor.
>
> thanks,
>
> Paul, ad7i
>
>
>
>
>
>
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