Hi Guys,

Can you suggest a circuit add-on which can produce a signal with shorter duty cycle (or smaller pulse width)? Pls refer to the attached picture file. Pin X has a square pulse train source while Pin Y needs to tap from Pin X connection. Please note that the high voltage level is at 4V while the low voltage level is at -0.1V.

Thanks!

 

Originally posted by Polgi-Wan@Sep 29 2005, 10:43 AM
Hi Guys,

Can you suggest a circuit add-on which can produce a signal with shorter duty cycle (or smaller pulse width)? Pls refer to the attached picture file. Pin X has a square pulse train source while Pin Y needs to tap from Pin X connection. Please note that the high voltage level is at 4V while the low voltage level is at -0.1V.

Thanks!

[post=10708]Quoted post[/post]​

Hi,
Could you give us som more info. What is the frequency range? What pulse range do you want for output? What is the drive requirements for the output? The voltage spec is a bit out of the ordinary, can you expand on this?

TOK

 

Originally posted by Gorgon@Sep 29 2005, 05:28 AM
Hi,
Could you give us som more info. What is the frequency range? What pulse range do you want for output? What is the drive requirements for the output? The voltage spec is a bit out of the ordinary, can you expand on this?

TOK

[post=10710]Quoted post[/post]​

It should operate at 2.5MHz. Pulse width is 50% of duty cycle for Input X. I would like to have a circuit that would shorten the duty cycle for Input Y. Input Y is series-connected to Input X. Also, they have to be in sync. Can a delay circuit plus op-amp work?

This would be easy if you have 2 signal generators/sources but let's say you only have 1 signal source?

 

As i see, the simple monostable can do this. CD4098 or 4528 can be triggered by rising edge, and with R-C You can adjust the desired pulse width.