In looking over some old schematics, I came across a very unusual configuration of the demodulation topology on a couple of White's circuits.
The first was the 6000d series 2 and also the White's liberty 2.
Can you say whether this is considered full wave? The way I see it, seems the opamp (filter on the 6000D) stage directly after the demodulation is being switched between inverting and non inverting topology, by successively pulling each input leg to ground, with each passing of the preamp sine wave positive and negative going sections. What say you?
I've also included a simulation of a half wave active pull down switching arrangement using two jfets and a non bipolar transistor. This circuit comes from the first incarnation of the 6000D. Quite interesting little circuit, maybe it has utility in some other application.
The first was the 6000d series 2 and also the White's liberty 2.
Can you say whether this is considered full wave? The way I see it, seems the opamp (filter on the 6000D) stage directly after the demodulation is being switched between inverting and non inverting topology, by successively pulling each input leg to ground, with each passing of the preamp sine wave positive and negative going sections. What say you?
I've also included a simulation of a half wave active pull down switching arrangement using two jfets and a non bipolar transistor. This circuit comes from the first incarnation of the 6000D. Quite interesting little circuit, maybe it has utility in some other application.
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