Circuits / 555 and op-amps
LM393 comparator (open collector)
The output only pulls down: the LED, fed from the supply, lights while V− > V+
Tap a part to see its voltages and currents. It is a model, not a measurement.
Parts
- Potentiometer 10 kΩSearch on Amazon
- Resistor 10 kΩ × 2Search on Amazon
- Integrated circuit LM393Search on Amazon
- Resistor 330 ΩSearch on Amazon
- Red LEDSearch on Amazon
- Jumper wires × 10Search on Amazon
- BreadboardSearch on Amazon
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