Circuit for simultaneous transmission of current and voltage - has differential amplifiers and number of impedances, with ratio of specified impedances determining voltage translation ratio.

摘要

The circuit has two input terminals (Vin1, Vin2), two output terminals (Vout1, Vout2), and two differential amplifier elements with output stages (OPA1, OPA2). The circuit also includes ten impedances (R1-R10). The first impedance (R1) connects the first input terminal to the negative terminal of the first differential amplifier. The second impedance (R2) connects the negative terminal of the first differential amplifier to the first output terminal. The third impedance (R3) connects the second input terminal to the positive terminal of the first differential amplifier. The fourth impedance (R4) connects the positive terminal of the first differential amplifier to the second output terminal. The quotient of the sum of the second and fourth impedances and the sum of the first and third impedances determines a voltage translation ratio. USE/ADVANTAGE - For e.g. recording studio equipment. Has symmetrical output and is suitable for unsymmetrical inputs without causing alteration of signal level and without causing signal distortion.