Jane Ifurung email (remove spam text)
Mr. Robert, I tried the frequency doubler you
suggested and I've got a fair output. The thing is,
it's not very exact and it's not symmetric. I used
HC244 buffers for the delay and 74LS86 XOR. To solve
for the duty cycle, I tried to cascade two frequency
doubler and connect it to divide-by-two flip-flop. But
the problem is, the output goes back to the input
frequency. I checked my connections and nothing's
wrong. Is there a loading effect? Is there a mismatch
between the HC and LS? I tried using LS244 and LS86
but the problem is still the same.
--- Robert Rolf <UALBERTA.CA> wrote: Robert.Rolf
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