[sdiy] flashing LED?? blinking led FLED (are they internally similar to a UJT?)

[mskala at northcoastsynthesis.com]

On Tue, 11 Jun 2024, Didrik Madheden via Synth-diy wrote:

> Which exact method they use is hard to know, but it could be anything from
> some simple multivibrator to a digital circuit which in turn might have a
> simple RC oscillator on board that feeds a divider. The latter might be more
> likely since the divider circuit can work with an arbitrarily high input

ZeptoBars has published die photos of a number of different LED flasher
chips.  This one uses an LFSR to create pseudorandom flickering:
   https://zeptobars.com/en/read/candle-flicker-LED-LFSR-RC-oscillator

> Here a second tangent. You can make an observation that you need a quite
> high number of components if you're going for absolute minimalism. Even the

It's a crazy world we live in...

-- 
Matthew Skala
North Coast Synthesis Ltd.