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Single transistor phase shifter

2016-05-07 15:21  
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This is a basicNPN transistor circuitwhich it provides a simple mean of obtaining phase shifts between zero and 170 degree.
TheBC108transistor works as a phase splitter, the output at point A being 180 degree without phase from the input.

Then Point B is in phase with the input phase.
Adjusting R1 gives the sum of different proportions of these and from now a successively variable phase shift.
The circuit operates perfect in the 600Hz to 4kHz range.

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