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Here is a simple idea, which is maybe stupid. But basically the idea is to cause the reference input to drop instead of causing the signal input to rise. Then it should be just a matter of controlling two dividers:

schematic

simulate this circuit – Schematic created using CircuitLab

This has some obvious problems. Like there is going to be a switching delay. Which may make it entirely unsuitable for your purpose. I haven't simulated or tested this in any way. But I don't actually know what you want to do other than control the two values.

Here is a simple idea, which is maybe stupid. But basically the idea is to cause the reference input to drop instead of causing the signal input to rise. Then it should be just a matter of controlling two dividers:

Here is a simple idea, which is maybe stupid. But basically the idea is to cause the reference input to drop instead of causing the signal input to rise. Then it should be just a matter of controlling two dividers:

schematic

simulate this circuit – Schematic created using CircuitLab

This has some obvious problems. Like there is going to be a switching delay. Which may make it entirely unsuitable for your purpose. I haven't simulated or tested this in any way. But I don't actually know what you want to do other than control the two values.

2 deleted 163 characters in body
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What if you set it up so that your hysteresisHere is ona simple idea, which is maybe stupid. But basically the invertingidea is to cause the reference input? Something along to drop instead of causing the linesignal input to rise. Then it should be just a matter of thiscontrolling two dividers:

schematic

simulate this circuit – Schematic created using CircuitLab

What if you set it up so that your hysteresis is on the inverting input? Something along the line of this:

schematic

simulate this circuit – Schematic created using CircuitLab

Here is a simple idea, which is maybe stupid. But basically the idea is to cause the reference input to drop instead of causing the signal input to rise. Then it should be just a matter of controlling two dividers:

1
source | link

What if you set it up so that your hysteresis is on the inverting input? Something along the line of this:

schematic

simulate this circuit – Schematic created using CircuitLab