I need help. I need to generate a 1000-100 Nano second negetive pulse using an RC circuit. When it is not generating a pulse, I need it to be positive. The smallest capacitor I have is polarized and has 100nF (I'm sorry. I didn't check if they were polarized before buying). The smallest resistor I have is 22 ohms. I'm stuck and I need this for my science fair project. Any advice is useful.

 

1000-100ns? Do you mean 900ns? or what?
What triggers the pulse?
And you will need a smaller capacitor than 100nF.

 

An RC circuit isn't likely to work. Most digital devices don't like slowly changing signals.

What other devices do you have available?

You could have continued this discussion in your other thread.

 

You already have a thread on this.

https://forum.allaboutcircuits.com/threads/how-to-generate-a-short-pulse-for-eeproms.196975/