[sdiy] sdiy, real ring modulator schematics

[Magnus Danielson]

From: "Happy Harry" <paia2720 at hotmail.com>
Subject: Re: [sdiy] sdiy, real ring modulator schematics
Date: Thu, 12 Apr 2001 22:26:18 -0000

> As I understand it... no. The diodes are biased on by the carrier, and the 
> signal is modulated by the varying resistance of the diodes... so
> the signal should be small and NOT turn the diodes on.

Right. Real ring-modulators is used even with very faint signals.
We often use diodes below the 0.7V you know ;)

> Yes the signal is AC coupled, but the carrier is not. This is like a
> VCA as used in the Koeg MS-50 filter... but it is four quadrant instead of 
> two.

Not really, not really.. look again.

> I think....   ;^)

Good disclaimer Harry!

Cheers,
Magnus