Timed operation of a voltage source

Thread Starter

uzair

Joined Dec 26, 2007
110
I have an input D.C. signal in the form of a pulse.I want that signal to ignite my external power source and using that source, i want my circuit to operate for specified time limit.What device can do that conveniently?
 

SgtWookie

Joined Jul 17, 2007
22,201
It rather depends upon your input DC signal pulse. What voltage, how much current is available, and what is the duration of the pulse?
 

thingmaker3

Joined May 16, 2005
5,073
Positive pulse or negative pulse?

With proper conditioning, the pulse could trigger a 555 monostable. The monostable output could then control a MOSFET or other switch for your power supply.
 

Thread Starter

uzair

Joined Dec 26, 2007
110
ok can u give me the pin configuration of the timer(555) chip.
thanks
 
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