Code:
Hi,
The attached is a sinusoidal oscillator.
Why have they done it like this?
Its from a 35 year old schematic.
The oscillator is to provide the sinusoidal input to the primary
of a LVDT.
Look at the biasing of the opamp's non-inverting input.
Its done via the collector-emitter path of a wrong_way_round
PNP!!
And then (presumably) to reduce noise at the non-in...
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