Electronics help - 555 monostable timer? - HotUKDeals
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Electronics help - 555 monostable timer?

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what resistor(s) / capacitor(s) would i need to make it last 3 minutes 20 seconds? thanks in advance!
GentleTouch Avatar
7y, 1m agoPosted 7 years, 1 month ago
what resistor(s) / capacitor(s) would i need to make it last 3 minutes 20 seconds?

thanks in advance!
GentleTouch Avatar
7y, 1m agoPosted 7 years, 1 month ago
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Comments/page:
#1
Im not doing ur GCSE Electronics homework for you.
#2
450k
400uF

or 900k 200uF

or 1M ohm 180uf
You get the idea :P
Gives 198 seconds so adjust slightly.
#3
Bigpoppaad
Im not doing ur GCSE Electronics homework for you.


ive already done it.. i was wondering if you got the same as me i got 1000k and 290 uf capacitor
#4
imafish2002
450k
400uF

or 900k 200uF

or 1M ohm 180uf
You get the idea :P
Gives 198 seconds so adjust slightly.


pretty similar to my own, the problem is adding up the resistors etc because school dont have such a wide range
i worked mine out to be 320.1 seconds

sorry it wasmeant to say 5 mins 20
1 Like #5
1M + 290uF is 320 seconds give or take :)
banned#6
3 minutes 20 seconds is 200 seconds..... not 320

lets hope you don't end up working for boeing or in the brakes department of toyota....
#7
jubbyme
3 minutes 20 seconds is 200 seconds..... not 320

lets hope you don't end up working for boeing or in the brakes department of toyota....


read above.. i said 5 mins 20

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