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Best Way to put hysteresis into window comparator?

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Flyback

Well-Known Member
Hi,
Can you think of the best way to put hysteresis into this window comparator?
LTC1841 is open collector.

(attached is PDF schem and LTspice sim)
 

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  • Window comparator.asc
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I don't know if it's the "best" way, but the usual way is to put a small resistor in series with each (+) comparator input, and a larger resistor (relative value depends upon the desired hysteresis voltage) from the output to each of the (+) inputs (one resistor pair for each input).

Where are you going to find a 2703.704Ω resistor for R4? ;)
 
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