Doubler circuit

jdzura at csc.com jdzura at csc.com
Tue Sep 29 20:33:22 GMT 1998


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Here is a postscript file with an all digital pulse doubler. You can use GSview
(ghost view) to look at the schematic. There are some issues, to get a non ground
reference (AC) output, just put a cap in series with the output gate. If
necessary, the circuit can be easily modified to generate a 50% duty cycle output
that is not referenced to the onboard oscillator. Remember, the pulsewidth of the
output circuit will be 1 oscillator cycle wide at a frequency of 2x the input. The
osc can be anything you can find, we use the X043B series of canned TTL
oscillators. They always start, regardless of temp.
There is also a D flip flop configured for a divide by 2. (See attached file:
P_dblr.zip)

Let me know if you have  any questions or problems
Joe D.
(See attached file: doubler.ZIP)

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