Help with obtaining a specific pulse

[malsch]

Hi, I have a 1Hz pulse and wish to obtain a very short pulse at the low edge of the 1Hz pulse. The following is what I'm referring to:

**broken link removed**

Since I cannot use a capacitor, I was thinking maybe something with flip flops but I'm still a bit stuck.

Thank you

 

[ericgibbs]

Hi, I have a 1Hz pulse and wish to obtain a very short pulse at the low edge of the 1Hz pulse. The following is what I'm referring to:

Since I cannot use a capacitor, I was thinking maybe something with flip flops but I'm still a bit stuck.

Thank you

hi,
Are you allowed to use a monostable, say a 555 timer.??

 

[dougy83]

So you can't use a capacitor? You need a delay of some sort; one way is to use an RC or RL delay, another is to use a gate delay.

For the gate delay method (i.e. no cap), connect the input signal into a NOR gate and inverter as shown in the attached diagram

 

[crutschow]

So you can't use a capacitor? You need a delay of some sort; one way is to use an RC or RL delay, another is to use a gate delay.

For the gate delay method (i.e. no cap), connect the input signal into a NOR gate and inverter as shown in the attached diagram

You can add more inverters (keeping it a odd number of) to increase the pulse width.