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I need help to identify the negative feedback loop in a hysteresis comparator

Can anyone help me identify where the negative feedback path is? It's not really feedback in the conventional sense of amplifiers, as a comparator is an amplifier on steroids with a very high gain ...
Voltage Spike's user avatar
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1 vote

I need help to identify the negative feedback loop in a hysteresis comparator

If you look at a half circuit analysis, you're removing the negative feedback created by M2. So you must look at both halves of the circuit together to understand the feedback path. This is simply a ...
horta's user avatar
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1 vote

I need help to identify the negative feedback loop in a hysteresis comparator

Referring to feedback in this circuit may be confusing because the feedback is in the load of the differential pair. In contrast, textbook feedback examples have feedback from output to input. First, ...
DavidG25's user avatar
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3 votes

I need help to identify the negative feedback loop in a hysteresis comparator

Suppose the comparator front end is at balance. You can simplify it as the drains both being connected to fixed voltages and the sources connected together to a current sink. At balance each ...
Spehro Pefhany's user avatar
1 vote

Solar emergency LED Night light control design: Solar panel, 5 V : 3.7 V 18650 Li-ion or similar as Vref. No negative voltage. Only GND. Which Op-Amp?

A few U-tube lessons later: The whole design problem I had seems to be simply solved by a logic level depletion mode N type MOSFET: Solar powered Gate, Battery connected to Source + Power/GND, LED ...
Tikun's user avatar
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1 vote

Solar emergency LED Night light control design: Solar panel, 5 V : 3.7 V 18650 Li-ion or similar as Vref. No negative voltage. Only GND. Which Op-Amp?

Single supply op-amps and comparators do exist. You don't need negative voltage. Just remember that op-amps are poor as comparators just like comparators ar poor as op-amps.
Justme's user avatar
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