AD633 specs

Paul Perry pfperry at melbpc.org.au
Mon Aug 16 22:19:19 CEST 1999


At 07:10 PM 16/08/99 +0100, Keith Winstanley wrote:

>Any Schemos?
>I built a dual ring mod using the design on Kevins site(?)
>I am not sure I am entirely happy with it though.
>
For the actual ring modulator part, I used the ckt straight from 
the data sheets (pretty well the same as the one onthe net).

What is unhappy about your implementation? symptoms?

Even a very small amount of noise or particularly hum (like a few
milivolts) in one input will produce an irritating apparent 
bleedthrough if there is a continuous steady tone in the second input.

To get zero out, you REALLY need zero in, as the human ear can pick out 
continuous tones even when you can only see the noise floor on a scope.

paul perry Melbourne Australia




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