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Cursed circuits #6: reverse avalanche oscillator

https://lcamtuf.substack.com/p/cursed-circuits-6-reverse-avalanche
18•surprisetalk•4d ago

Comments

cryo32•1h ago
This isn't particularly cursed. I mean we've had avalanche pulse generators for well over half a century easily. It's just exploiting semiconductor characteristics they don't teach you in the usual garbage undergrad textbooks.
denotational•17m ago
> the usual garbage undergrad textbooks

Out of interest, please could you give some examples of textbooks you consider garbage, and some you consider not to be (undergrad or otherwise)?

cryo32•7m ago
Garbage -> Sedra and Smith particularly - hate it, anything which kicks you in the nuts right up front with Laplace and networks abstractions, anything from Pearson - have never seen a good one.

Good -> Razavi (Fundamentals of Microelectronics), Art of Electronics, most Jim Williams stuff (AN's and articles), Bowick RF Circuit design. They're actually useful.

voidUpdate•51m ago
You can even use it to make a simple audio synth: https://www.lookmumnocomputer.com/simplest-oscillator
mock-possum•6m ago
The man is a treasure
fnands•28m ago
Delightfully cursed.

I wonder how consistent the breakdown voltages are between manufacturers? I mean, I am sure there is some spec, but is it not just a minimum in this case?

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Cursed circuits #6: reverse avalanche oscillator

https://lcamtuf.substack.com/p/cursed-circuits-6-reverse-avalanche
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