Re: any comments on this circuit?

From: andy (news4_at_earthsong.free-online.co.uk)
Date: 07/22/04 

Date: Thu, 22 Jul 2004 22:06:16 +0100

On Thu, 22 Jul 2004 18:41:48 +0100, andy wrote:

> It's meant to send a 1 second pulse through an electromagnet at the end of
> every day, to start a plant watering system, as i said in an earlier post.
> I've tested it on breadboard, but with only one transistor and a single
> coil winding. I'm trying splitting the coil into 3 parts to get more
> current through it. It would be good to know what people think of this
> circuit before i build the final version - it's only the second circuit
> i've built.
>
> http://www.niftybits.ukfsn.org/electronics/daily-water.png
> http://www.niftybits.ukfsn.org/electronics/daily-water.gif
>
> andy.

I've been through it again, and worked out the component values for the
second half of the circuit again. The new version is at:

http://www.niftybits.ukfsn.org/electronics/daily-water2.png
http://www.niftybits.ukfsn.org/electronics/daily-water2.gif

If there's something wrong with the basic idea of how i've laid it out,
i'd rather be told why than just have it written off. 

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