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Hysteresis

Yann Guidon / YGDESYann Guidon / YGDES wrote 12/23/2020 at 01:35 • 1 min read • Like

Playing with Fasltad's circuitjs to create a slightly better hysteresis circuit than the default circuit. It's crazy because changing any value affects the rest of the circuit.

The main difference is the feedback resistor, and a better choice of resistor values.

I tried to reduce the current draw and increase the hysteresis, which keeping convenient resistor values and decent logic levels (at least the low level is < Vbe at 3.3V).

That's if for today :-)

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Yann Guidon / YGDES wrote 12/23/2020 at 04:00 point

I tried to simulate this one  https://www.edn.com/schmitt-trigger-uses-two-transistors/ but the curves are weird...

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