how does an RC circuit phase shift a signal ?

Question

i dont understand how does an rc circuit phase shift an ac signal, and what kind of phase shifting it does ? is it phase advancing or phase retarding.
please someone explain coz this hampers me a big time from comprehending phase shifting filter circuits.

Answer 1

The voltage across the capacitance in a series RC circuit lags the applied voltage, thus producing a phase shift of the applied voltage. This is called phase delay, or phase retarding.



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Answer 2

Rc Circuit Phase Shift

Answer 3

A phase shift has to be referred to something. This could be due to the difference in timing of the voltage and current waveforms, or in this case the difference in timing between input and output voltages. However the phase shift at some frequency is taken as relative to the phase shift at some particular reference. That is a key point towards understanding how it can be leading and lagging. The reference frequency is often taken as one with zero degrees phase shift. This overcomes any issue of whether the phase is more than 360 degrees due to overall delays passing through a system.

Answer 4

A sinusoidal oscillator utilising a unmarried transistor may well be configured to apply 3 resistors and 3 capacitances, each and each pair of which introduces a 60 degree section shift. This a hundred and eighty degree section shift, plus the a hundred and eighty degree section shift presented by skill of the transistor under pressure out in consumer-friendly-emitter mode, produces the final 360 degree section shift required for sustained oscillations.