Hello,
I have a PRS10 rubidium which gives a 1pps output. The output is a
10 us positive pulse.
I need to convert that to a 50:50 duty cycle pulse. Still 1pps.
I'm hoping for a simple circuit rather than having to use a pic.
I don't mind a bit of propagation delay, but I need to preserve the
low jitter on the rising edge, and hopefully also the falling edge.
Any ideas out there
Regards
Steve
The simplest way that I can think of is to feed both inputs of an XOR gate
with your 1pps signal to double it to 2pps, then feed the XOR output into a
flipflop to get back to 1pps with 50% duty cycle. You might have to delay
the 1pps into one of the XOR inputs with a small RC to reliably trigger the
flipflop. Use 74HC or AC gates and the jitter should be tolerable.
Cheers,
David
dgminala at mediacombb dot net
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