Using an opto-coupler could make things simpler. A series resistor from the torch node to the LED, then to ground clamp node. You did not say what the function of your circuit is, and accuracy required?
Using an opto-coupler could make things simpler. A series resistor from the torch node to the LED, then to ground clamp node. You did not say what the function of your circuit is, and accuracy required?
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