AVR-Chat

On Thursday 12 August 2004 11:00, Dave VanHorn wrote:
> At 09:57 PM 8/11/2004, kc9dag wrote:
> >> I think the problem is there are not enough current to
> >> drive the relay.
> >
> >oops, posted the wrong schematic... mine was still wrong, but I did
> >have the transistor...  The one I ment to post is
> >http://www.dpicts.com/Tiny15L-LaserDetector-2.jpg  which has the
> >NPN, but I hooked up the transistor the way it is shown on page 3-2
> >of the STK500 manual...
> >so after everyones advice I have changed the schematic to
> >http://www.dpicts.com/Tiny15L-LaserDetector-fixed.jpg    I didn't
> >add the diode as someone suggested b/c I am actually using a solid-
> >state relay (an Laa110)...
>
> An SSR may still have a coil, with a small relay activating a large
> triac.

Yikes! That's an interesting concept of "Solid State Relay" :-)

> Also, I'd still reccomend the 10k pulldown on the tiny's output pin,
> Otherwise, you have an excellent RF detector connected to your relay,
> whenever the uP is in reset.

-- 
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