Showing posts with label timer. Show all posts
Showing posts with label timer. Show all posts

Sunday, April 26, 2020

Re-Re: Low power pulse timer

as it was modified :





[EoP]

Monday, August 13, 2018

modified another circuit

src. :: http://wilf.solarbotics.net/Altbeam/Altbeam_files/Altbeam.html (seek text tlc -- for TLC27L2)

mod. :: didn't like quite a lot of things about it's operation so . . . it auto optimized itself to ↓ that ↓


the Spice shows a stable error free graph -- which i quite doubt would be that in real . . . but it's an add up concept to the few long interval timers out there . . .

[Eop]

Sunday, May 21, 2017

some xx555 timer tests

crystalless oscillator / attempt to discriminate the intervals (initialized by pin-4 , R2 , C4)
-- the messy circuit is remnant for testing out several pulsed feed options -- this one seems to produce equal (14-tick) on cycles ???


"inversed rails" variant (an attempt to avoid initialization of the retriggerable monostable -- it still requires initialization -- by pin-2 , R11 , C3 -- this time)



[Eop]