Fw: [sdiy] Passive Ring Modulator

[Scott Gravenhorst]

I like the transformerless ones.  Questions:
1) any clues as to the resistor values? (range?)
2) what performance difference is there between xfmr and non-xfmr?
3) the resistors Rx, should this be 2 resistors and a trimpot?

I realize that the resistor method would need opamps under most
circumstances to get inverted and noninverted copies of the input
signals which defeats the "no power" aspect, but it does eliminate 
the 1496 or whatever.  I would like to experiment with a 4069 operated
as linear amps for that, I like the way they distort.  one 4069 would
be enough with 2 inverters left over.  The 4069 would have to be run
off of a dual supply (+/- 7.5 volts, technically, but I've done this
with +/- 8 and have heard of it done with +/- 9)


René -- might this one work for your simple squaring circuit?



=?iso-8859-1?Q?Ren=E9?= Schmitz <uzs159 at uni-bonn.de> wrote:
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>Some nice ringmodulator circuits. Especially picture 40 b, leads to=20
>a transformerless implementation.
>
>Cheers,
> Ren=E9
>
>>Reply-To: <lsh at wo.cz>
>>From: "Jaroslav Lukesh" <lukesh at k-net.cz>
>>To: "Ren=E9 Schmitz" <uzs159 at uni-bonn.de>
>>Subject: Fw: [sdiy] Passive Ring Modulator
>>Date: Thu, 18 Jul 2002 20:57:15 +0200
>>X-FeelingPriority: Normal
>>X-Mailer: Muj vlastni Mail klient 1.00    =20
>>
>>There I was post, but my mails does not arrive to synth-diy. Try these.
>>
>>It is very little known ringmod solutions (and very easy).
>>
>>Regards JL.
>>

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