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Simple delay on

bigkim100

Apr 17, 2013
267
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Apr 17, 2013
Messages
267
Would ballpark timing in the 100's of % be fine ?

Thats what you get with 555 timers over T and V and Bulk cap tolerances.
Datasheet very misleading as it shows its timing with a relatively small cap,
.1 uF, not a bulk electolytic type cap whose intial tolerance can be in the
100's of % tolerance at room T.

But I suppose one can always throw in a pot to adjust for these difficulties.

Even worse with logic gate based timing, where threshold varies dramatically.
Add that to bulk cap tolerance and you have a system that may or not blink in
your lifetime.....:)


Regards, Dana.
How did we ever get by, prior to Microcontrollers...... hell even get to the moon without them??
 

danadak

Feb 19, 2021
271
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Feb 19, 2021
Messages
271
We had a computer onboard. Used carefully characterized components in circuits.
Used to have lab standards to measure against.



I have scopes from the late 40's and 50's that have fairly precise timing capability.


Regards, Dana.
 

dragon

Oct 31, 2022
116
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Oct 31, 2022
Messages
116
heres an rc system which chain reacts across. it would work for what u want, except the problem
is it needs not be an input pulse, it needs to be solid power going in, then it delays on at the end of the chain.
 

bigkim100

Apr 17, 2013
267
Joined
Apr 17, 2013
Messages
267
heres an rc system which chain reacts across. it would work for what u want, except the problem
is it needs not be an input pulse, it needs to be solid power going in, then it delays on at the end of the chain.
Thank you Dragon. Not EXACTLY what I need, but still useful
 
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