thank you so much!

 

using lm311

1.1 v on pin 7 if pin 2 is 9.4v and pin 3 is 10.46 or visaversa...no output change...8 is at supply positive, 1 and 4 are ground

 

You need a pull up resistor from pin 7 to +ve, as its an open collector ic.

 

Hi All!

I want to know when my battery is at 14V. I can use a comparator using a reference voltage to get a change in state on the output when 14V is reached. I need to convert that change in state to a 1 second pulse to drive a mosfet. What circuit do I use? Maybe there is One that will give me a 1 sec pulse when ever there is a change in state from low to high or high to low??

Thanks!

Joster

The LM3914 is a multiple window comparator (bargraph driver) with a huge assortment of appnotes and examples online, of the 10 available outputs for driving LEDs you can use as many or as few as you want.