Delayed Pulse

Discussion in 'General Electronics Chat' started by Hurt_it_Circuit, Jun 2, 2013.

Oct 2, 2012
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I want to delay a signal a specified amount and for it to produce a certain pulse width. Pretty much I am given an input pulse of a short duration and I want to delay the pulse a certain amount but maintain a certain range of pulse width. I have created a NOR gate that produces my desired pulse width and it is independent of the input period. But I have no idea how to create the delay. I have tried various 555 timer set ups and none of them have produced my delay. Any ideas or hints would be greatly appreciated.

2. LDC3 Active Member

Apr 27, 2013
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You can use this chip. A pulse on either A or B will propagate through the counter for the specified number of times on S0-S3 and then give a pulse on Q. The other required input is a clock signal.

Oct 2, 2012
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This is too involved. I was thinking to have a transistor that opens up after a capacitor has been charged which will give me a delayed signal depending on my RC values... Or is it even possible to do it this way?

4. KMoffett AAC Fanatic!

Dec 19, 2007
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What is the input signal source?
What is the input pulse width, polarity, and voltage?
What is the length of the delay period?
What is the desired output pulse width range and voltage?

An LM556 configured as a dual monostable might work...depending on the answers to the above.

Ken

Oct 2, 2012
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input signal is a digital pulse of varied length
input pulse is from 0-5 volts
the delay is to be 120-132 microseconds
pulse width is to be 30-33 microseconds at 5 Volts

6. KMoffett AAC Fanatic!

Dec 19, 2007
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0V>5V>0V input pulse polarity? Delay after the leading or trailing edge of the input pulse?

Ken

Oct 2, 2012
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Yes 0V>5V>0V polarity... Delay after the leading edge trigger

8. KMoffett AAC Fanatic!

Dec 19, 2007
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Oct 2, 2012
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I figured it out!!!!!!!!!!!!!! thanks for the help everybody that replied

Last edited: Jun 2, 2013
10. English New Member

Jan 11, 2012
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I have the same need and the dual 555 is not OK

Dec 19, 2007
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Ken

Sep 17, 2013
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