Various type of high low circuit can be designed using different type of IC. Here the circuit shown of high/low voltage cutout using two op-amp IC 741, with hold on facility.
PARTS LIST OF HIGH/LOW VOLTAGE CUT-OUT USING OP-AMP 741
| Resistor (all ¼-watt, ± 5% Carbon) |
| R1, R7 = 10 KΩ
R2 = 1 KΩ R3 – R6 = 100 KΩ R8 = 100 Ω VR1 = 10 KΩ |
| Semiconductors |
| IC1, IC2 = 741
ZD1 = 9.1V D1, D2, D3 = 1N4001 T1 = SL100 |
| Miscellaneous |
| SW1 = ON/OFF Switch
RL1 = 16V DC,450V AC DPDT Relay |
please explain about the project high/low voltage cutout using op-amp 741