NPN BJT Schmitt trigger using 2N3904 bipolar junction transistors learning electronics lesson 0029

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[@ChadKapper]

I really enjoy watching your videos. I just wanted to say thank you!

[@Electronzap]

Glad to hear, thanks for watching!

[@dannyjensen4954]

good video. Thanks for the switch example.

[@Electronzap]

Thanks for watching!

[@woosix7735]

neat!

[@Electronzap]

Thanks!

[@MagicSmoke11]

So here, the trumpet Logic is reversed ?

[@Electronzap]

No clue unfortunately.

[@Enigma758]

Nice video thanks! I think maybe the 1k and the 22R resistors can be thought of as a variable voltage divider (due to Q1). The midpoint of the divider connects to the base of Q2. When Q1 is ramped down in the active region, the "bottom" resistance of the divider increases raising Q2 base voltae, but until it approaches cutoff, is not enough to reach the .7 threshold to turn on Q2. Hence a "dead zone". Basically, it's shifting the "turn on points" of the two transistors. That's how I think of it at least. I hope my take on it makes sense!