How exactly does a comparator work? - Electrical Engineering Stack …
Apr 12, 2015 · How exactly does a comparator work? Comparators have many uses and its concept is not too hard to grasp. What I don't understand however is how exactly it compares two voltages. …
Comparator with hysteresis; what resistors go where?
Apr 11, 2023 · The comparator does it during the transition with the help of the positive feedback. What positive feedback is This is positive feedback "out of control" or as they call it, "self-reinforcing …
schmitt trigger - How to calculate hysteresis of a comparator ...
Oct 16, 2024 · How to explore it The best way to understand this idea is to try implementing hysteresis step by step in your op-amp inverting comparator circuit. Let's simulate each step with a separate …
Understanding a window comparator - Electrical Engineering Stack …
Apr 10, 2020 · I don't understand the output of the window comparator. How does the window comparator switch from HIGH to LOW? There is no transistor or anything else. Only two OPAMP …
Can you make a voltage comparator with only passive components?
May 5, 2025 · I would like to build a comparator circuit for two voltage sources each supplying around 0.5 volts. I would like to make the circuit with completely passive components that don't consume or …
batteries - LM339 Comparator Battery Discharge Cutoff Circuit ...
Dec 16, 2024 · Don't bother: a low voltage cutoff based on the total battery voltage is useless because it doesn't protect the Li-ion battery. By the time it shuts off, one of the cells is likely to be over …
Voltage Input Biasing on NMOS in CMOS Comparator
Nov 13, 2024 · This is the same problem that all comparator/opamp inputs have. When you need to handle input voltages near ground, but not near the positive supply, then just invert everything and …
Hysteresis on inverting terminal for comparator circuits?
Jan 9, 2024 · If you examine 98% of circuits online that include hysteresis for a comparator, they always implement the hysteresis on the non-inverting input, like so: This is easy enough to calculate. …
comparator - Difficulties with low voltage cutoff circuit for Lipo ...
Feb 25, 2025 · The comparator inputs require less than microamperes of current, so you can increase those resistances significantly. When the comparator output changes state, the load is switched on …
operational amplifier - LM358 comparator circuit - Electrical ...
Jan 21, 2025 · I drew the following circuit using LM358 opamp in order to understand the comparator behavior. I have few questions regarding the circuit below: How should I wire the unused opamp? …