[sdiy] polarity switcher

[CHoaglin at aol.com]

In a message dated 3/18/02 7:28:43 PM Eastern Standard Time, 
tpaddock at seanet.com writes:


> 
> If I understand right, an analog multiplier 
> should do it. Maybe like an AD633. 
> As a bonus, it's a ring modulator. 
> 

As in multiplying a positive input on one input with a negative input on the 
other to get a change of sign -------> +5 * -1 = -5 ?

-Chris
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