modified 7 years ago

Faster LTP-based Schmitt trigger

00:36:43

Using capacitors to make it faster at the expense of lower input impedance at high frequencies. Just-about handles 3MHz, (depending what output quality you want,) which is 6 times faster than without the capacitors. Input impedance at that speed is something like 7kΩ, maybe less for 10ns or so.

At start, it takes a moment for some capacitors to charge.

Slow but sane version previously published:
http://everycircuit.com/circuit/5498348688900096

Simplification of the circuit which gave me the capacitor idea:
http://everycircuit.com/circuit/5278576218996736

published 7 years ago

jason9

7 years ago

It’s been a while since you’ve touched the serial computer you were making, so maybe you can try again? If you still need to relax some more, I don’t mind.

eekee

7 years ago

@jason9: it's too much work :)

jason9

7 years ago

When do you think you’ll be ready? You’ve already come so far, so why not do that last little bit and finish it up rather than being lazy and never getting around to it? I understand if you don’t feel like it, but you should finish sometime.

eekee

7 years ago

@jason9: Because it's not the last little bit at all. it's possibly the biggest part of all, with a sort of ghost feature in the form of the timing which isn't really worked out at all and is important enough and challenging enough to scare me.

jason9

7 years ago

I see.

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