[sdiy] On the topic of ring modulation (Using FETs instead of diodes?)

[ASSI]

On Thursday 14 August 2014, 14:16:30, Ove Ridé wrote:
> I just watched this video and got reminded of the diode ring mixer
> topology of ring modulators.
> 
> https://www.youtube.com/watch?v=junuEwmQVQ8
> 
> As mentioned in the video, the diode ring mixer has the issue that
> there are dead spots when the carrier is near zero, because of the
> diode turn on threshold. This got me thinking, what if you instead
> used FETs, perhaps driven by a comparator, instead of diodes? This
> should, if done well, get rid of that non-linearity, as far as I can
> tell.

There's many ways to do that, simply search for "ideal diode" and "precision 
rectifier" and pick your poison.


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

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