VCR, VDR or VCO

  • Thread starter madmike159
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madmike159

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I need to make a pulse of varing length. Either I need a VCR/VDR to control the length of a momo stable pules, or a VCO to trigger a preset monostable at different times.

I have been trying to find some thing to do the job for me but havn't had any luck. The VCR2N/4N/7N made by Siliconix are no longer made, and I can't find any where that stock them or any thing similar.

Can any one tell me where to get hold of something which will work?
 

Averagesupernova

Science Advisor
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Triangle wave fed into a comparator with an adjustable reference.
 

berkeman

Mentor
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or a 74HC4060 with Xtal and a little decode logic...
 

madmike159

Gold Member
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Thanks for the help guys. I found a way to make a VCO from a 4046B.
 

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