Multiplying Circuit Composed of MC1496

Published:2011/7/21 6:40:00 Author:Sue | Keyword: Multiplying Circuit | From:SeekIC

The picture shows the multiplying circuit composed of MC1496. In the circuit, when Rx=30kΩ, Ry=62kΩ,I1=0.5mA,K=1/10, the output voltage Vo=VxVy/10. The output current Io is phase reversed by the inverting amplifier, so Vx is put on X-terminal, and it is decided by that the right side of the formula is positive. If the right side is negative, the input signal should be put on X+terminal. In order to avoid parasitic oscillation, series network composed of 10pF and 470Ω should be connected to the input terminal of Vx and Vy. RV1=20kΩ, Y is imbalance adjusted. RV2=20kΩ, X is imbalance adjusted. RV3=20kΩ, output imbalance adjusted. When the signal source's direct current resistance value is low, R1 and R2 can be disconnected.



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