Published:2009/7/16 5:43:00 Author:Jessie | From:SeekIC
Bridge R1D5R2D6 and two transistors in d-c negative-feedback loop deliver output signal that is replica of input but at lower impedance and shifted in d-c voltage level a predetermined amount.-J. Willis, High Precision D-C Level Shifter Reduces Output Impedance, Electronics, 36:18, p 65-68.
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