555 timer monostable mode with 50k resistor, 100uF cap: LED stays on, why?

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#1 21674139 05 Jun 2015 07:56

Jiten Thapa Jiten Thapa

Anonymous

Post #1
21674139 05 Jun 2015 07:56

I used a 555 timer in monostable mode using 50k resistor and 100uf cap but after I turned the switch on at pin 2, the led became on and never went off? Whats the problem in that, I tried the circuit many times but failed
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#2 21674140 05 Jun 2015 18:42

richard gabric richard gabric

Anonymous

Post #2
21674140 05 Jun 2015 18:42

Post an accurate schematic of how you have wired it up, without that no one has a clue as to what you may have done
cheers,
Richard
#3 21674141 05 Jun 2015 18:47

Kevin Angelo Ma Kevin Angelo Ma

Anonymous

Post #3
21674141 05 Jun 2015 18:47

Hi Jiten,

Can you show your circuit diagram for this? Maybe its just that you don't have a connection for the reset trigger or I maybe wrong.

Best,
Kevin
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555 timer monostable mode with 50k resistor, 100uF cap: LED stays on, why?

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