Re: [CAD_CAM_EDM_DRO] Re: port problem

Yes,
If its a solid state relay, most use an internal led type optocoupler, so your
load can be as easy as testing it with and led with a ~330 ohm resister in
series.
If you can get the LED to light, then solid-stae relay should also activate.
Like Ballendo says wisely, see if the relay has some input current specs.
If you want some spare solid state relays, MECI.com or
"marlin P. Jones" usually"(websearch) usually has good used deals ~$9.00.

Good Luck. ps if you need it, I can whip up a dos parallel port
program for you to manually toggle bits while testing this.
Let me know if you need it.

-Lee

At 03:10 AM 10/15/00 -0000, you wrote:

>Terry,
>
>Alan gives you some good advice, but be sure your SSR can take 12V.
>A lot of these are 3-32V, so ok, but some are TTL input so 12v=smoke!
>
>Ballendo
>
>>No, I'm afraid that won't do. Connected this way, you are trying to
>>source current to drive the SS relay. The '374 latch IC (or whatever
>>part they're using) will only supply a few mills of current in this
>>mode.<snip>Alan
>