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Dc level shifting of an ac signal

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Mehmood Ahmed

New Member
HI,

Is there any way to shift dc level(below 0 or beyond) of an ac signal. I diode clamping does not fulfill my need as it limits at +0.7 volts.
thanx
 

ericgibbs

Well-Known Member
Most Helpful Member
HI,

Is there any way to shift dc level(below 0 or beyond) of an ac signal. I diode clamping does not fulfill my need as it limits at +0.7 volts.
thanx

hi,
Depending upon the 'ac signal' you could use a OPA to give a 'dc' offset to the 'ac' signal.

Give us more information.:)
 

crutschow

Well-Known Member
Most Helpful Member
A common method is to couple the AC signal through a capacitor. The DC level at the output of the cap can be shifted to whatever you want with a resistor to the desired bias voltage. The RC time constant of the capacitor and resistor has to be large enough to transfer the lowest AC frequency of interest, of course.
 
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