Tag «Comparator»

LM311 Comparator with Hysteresis

An LM311 comparator circuit with the pin numbers  is shown in the schematic diagram figure below. The ground for this transistor is at pin 1 and the open collector output is at pin 7. It is shown pulled up to the logic voltage of +5 with a 1k resistor, which is typical. The LM311 output …

Non-Inverting Comparator With Histeresis

This circuit has similar function with inverting comparator with hysteresis, but the  output is not inverted. The output will be high if the input is higher than the upper threshold point, and the output will be low if the input is below the lower threshold point. Here is the circuit’s schematic diagram: What will happen …

Inverting Comparator With Hysteresis

Comparator with hysteresis (Schmidt trigger) can be built using  LM339, LM239, LM2901, LM2901V, NCV2901, or MC3302  quad single supply comparator integrated circuit chips. Here is the circuit’s schematic diagram and formula: This circuit’s output will swing to high or low using two threshold values. If the last output is high, then the output can be …