[sdiy] Trigger To Gate Circuit

[David Brown]

I did a trigger delay using a CD4538.   Details of my trigger delay 
is at http://modularsynthesis.com/modules/DJB-008/djb008.htm

I'm not sure about the trigger to gate.  What makes the gate go 
low?  Are talking about a trigger width stretcher?  The Q output of 
the first monostable (pin 10) is a stretched trigger.  It triggers 
the second monostable on the falling edge to generate a 5 mS 
trigger.  You could get two trigger stretchers out of the same part 
by just using the first part of the schematic.  You can eliminate the 
gate circuitry and just tie the resets high.  I made the monostable 
trigger on the falling edge but you could use the + input to make it 
trigger on the rising edge.

Dave

At 07:50 AM 6/7/2008, Eyesaw wrote:
>Hello - I have a need for a circuit to convert triggers to gates. A 
>trigger delay will work, I believe. Wondering if anyone knows a 
>schematic or can describe a design to address this issue?
>
>Thanks for your help -
>
>Bill