To all that have replied:  Thank you for your ideas.  I had considered
"standard" relays, but I would like a "quieter" solution, I'm thinking of
the opto isolator, or the SSR from the company opto-22.

Kevin B.: I too come from the same type of background - and am trying to
learn some of the intracacies of circuit design :)

It looks like the MOC3011 would be a good device.  I see in figure 8 the
Triac connected to the chip.  do you happen to remember which one you used?
I would like to take a look into this option a bit more.

John W.: Have you used these SSR's from opto-22 in the past?  what kind of
cost are they?  are they loud, quiet, what?  Would I need to use a triac
with them, or would it be a complete solution?

Thanks in advance!

-Tony


----- Original Message -----
From: "Kevin A. Benedict" <kben@dca.net>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, August 12, 2002 12:50 AM
Subject: Re: [PIC] [EE]: Using DC to control AC.


> Hi Tony,
> Try the data sheet for the MOC3011, I had a PIC controlling several
> 60 watt bulbs with an opto-isolator and triac.
> http://support.tandy.com/support_supplies/doc66/66249.pdf
> I believe figure 8 was the circuit I used.
> I am sure some of the EE's will chime in.
> I am a programmer not an EE :)
>
> Good luck,
> Kevin
>
> >hi,
> >
> >I'm trying to figure out how to use my PIC to control an AC voltage.
> >
> >For example:
> >
> >I have a fountain that las low voltage AC lights, and a set of low
voltage
>
> >AC pumps (say 3 lights and 3 pumps, all run off of 12V AC, max all three
> >lights and all three pumps would be on.  The pumps are rated at 3.6A).  I
> >want to create a program to turn on and off lights and the pumps at my
will.
>
> >
> >Obviously, my PIC circuit is a DC circuit.
> >
> >So, can anyone suggest what I might be able to do in order to control
this
>
> >AC voltage?  I don't need to funnel a lot of power, 60 watts (actually
43.2,
>
> >but increasing a bit for safety) per "switch".
> >
> >So, the AC side would be 12V AC, the DC would be 5V DC for the PIC and
> >either the LCD or perhaps LED's to indicate what is on and off.
> >
> >Any resources, sites, small samples would be most appreciated.
> >
> >-Tony
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.
>
>
>

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