Re: Can someone help me put this together?

On Tue, 25 Oct 2005 20:52:03 +0200, "petrus bitbyter"
<pieterkraltlaatditweg@xxxxxxxxxxxxxxxxx> wrote:


>John,
>
>As too often it all depends. This time the properties of SW1 stipulate the
>possibilities you have for a solution. In the simple ones, timing will be
>critical. For instance, when you assume SW1 to be a momentary switch, you
>must be sure the motor cannot stop while SW1 is closed. So the relay you use
>should be fast enough to be activated by SWI but SW1 (or the motor) should
>be fast enough to have SW1 released before the motor actually stops. Another
>SW1 requires another approach and you may need an extra relay or other
>electronics to make it work the way you want. Worsed case you cannot be sure
>whether or not SW1 is closed which requires some memory in a reliable
>circuit. I'm sure you are able to make a working circuit but I don't like to
>draw more schematics without more information from the side of the OP.

---
I've already posted a solution for the OP, on abse, under the
subject: "Probably a simple question, but... (from SEB)" which
removes all the vagaries of the switch and the relay.

--
John Fields
Professional Circuit Designer
.

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