Inverting hysteresis comparator circuit

Photocoupler

The following is a circuit diagram of the inverted hysteresis comparator circuit

Inverting hysteresis comparator circuit

Inverted hysteresis comparator

(1) According to the diagram wiring, and adjust Rf to 100k, Vi is connected to the DC voltage source, and the critical value of Vi when Vo is +Vom→-Vom is measured.

(2) Same as above, Vo is from -Vom→+Vom.

(3) Vi is connected to a sinusoidal signal of 500 Hz peak-to-peak 3 Vp-p, and the Vi-Vo waveform is observed and recorded.

(4) Repeat the above experiment by adjusting the RF in the circuit to 200K.