Low Duty cycle generator

[Er_SJSU]

Hi,

I need pulse generator to Drive MOSFET. My requirements for duty cycle is Ton=1mS (5V,DC) and Toff=60 Sec (0V, DC).

Can any one please suggest me the simplest possible solution to the problem.

I am trying to avoid Timer and counter circuit.

I want to use some kind of oscillator and schemit trigger.I am not sure how?

Please help me.

Thanks for every one in Advance.

 

[aryajur]

Hi Er_SJSU,
Without using a counter if you generate a delay just using a Capacitor that becomes very unreliable and bulky. Even with a 100uF capacitor to charge 1V in 60sec you need a current of 1.66uA. So your leakage current of the capacitor must be really low over all your operating conditions. If you already have an oscillator, why are you avoiding the counter. That would make things a lot easier I think.