Is there a way to modulate the DC level of a signal while holding the peak voltage constant, as in looking "flat" on a CRO?
IOW, as if the DC bias knob of a function generator was cranked up and down at a certain frequency while voltage limiting the peak voltage.
Having explained that, what I have in mind is to modulate the DC level so it alternates positive and negative, in the form of a low frequency sinewave.
This would be in relation to a fixed voltage positive and negative rail.
Klaus Jensen