[sdiy] X8 squarewave multiplier.

[Ian Fritz]

At 10:27 AM 1/17/06, Harry Bissell Jr wrote:
>If you have a sawtooth wave you could run it through
>a number of comparators, and make pulses each time one goes
>high. Combine the pulses and you have frequency multiplication.
>I think that this has been done with an LM3914 bargraph chip.
>
>iirc it was Grant Richter who did it...
>
>The Wiard/Blacet MiniWave uses a similar frequency multiplication
>technique...


Also:
http://home.earthlink.net/~ijfritz/pm_cir3.htm