[sdiy] audio controlled light show

[Happy Harry]

If you use solid state relays be sure to use
those with zero voltage switching to minimize
the interference from the thyristor switching.

It also helps to locate the bulb and SSR very
close and minimize the loop area of the wiring.

I did a color organ with this method that I could
run a guitar cord parallel to the power wiring
without unacceptable noise in the guitar.

Dimming controls are bad news in therms of noise.

H^) harry


>From: John Speth <JohnS at molectron.com>
>To: "Synth-DIY List (E-mail)" <synth-diy at dropmix.xs4all.nl>
>Subject: RE: [sdiy] audio controlled light show
>Date: Tue, 14 Aug 2001 12:06:43 -0700
>
>I think solid state relays are instantaneous.  I've used them for
>incandescent lights with no problem.  I'm not sure how they would work for
>other devices though.
>
>However, depending on the bulb you use, there may be a delay between the
>time the relay is turned on and the time the bulb is at full power.
>
>John Speth
>
> > I am building a light controller that responds to an audio
> > input. I have
> > figured out how I will do the audio signal to logic part of
> > the circuit.
> > Question... how do I turn on/off the 120 AC for the lights. I
> > thought of
> > using relays, but this will produce a slight lag between
> > audio beat and
> > light pulse. Of course this lag will be added to the lag of the light
> > powering up. Maybe this lag is insignificant? Does anyone now
> > of a schematic
> > that uses solid state to do this?
> > Thanks
> > -Bill
> >


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