Divider Circuit

As shown in the division circuit, A1 forms a voltage-controlled current source, A2 is a voltage comparator, and A3 forms an active low-pass filter. When the time constant R1C1 is equal to the clock pulse period T, the relationship between the circuit's output and input is:

Vo=-V2E/V1

If E=1V, then

Vo=-V2/V1

V1 and V2 are required to be positive values ​​and limited to 10V, and V2 is slightly lower than V1. Resistors R1, R2 and capacitor C1 are required to use components with good temperature stability. A1 is HA2-2520, and A2 and A3 are LM101A.