Gentlemen,
I need to shrink the duration of 'on' pulses in a continuous DC pulse train. At present, they're 4.5V and 30mS wide and I'd like to shrink them down to 3mS and ideally double their amplitude as well. I've had some ideas using a couple of FETs and 2 NAND gates, but with the other necessary components it comes out at over a dozen parts. I'm thinking their ought to be a more elegant and simpler way of doing this. Any ideas? I don't need any kind of schematic, just general ideas.
CD
Just fire a 3 ms one-shot? Or an RC differentiator.
Double with a fast opamp, or a mosfet gate driver chip, one of the IXDN series maybe.
So maybe one RC and an IXDN602. Needs a 10 volt power supply.
John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics
Series capacitor with diode to ground, and you've got part of a classic voltage doubler.
Guys, please ignore this question. I've no idea how it got re-posted, but it pre-dates the death of Jim Thompson (who kindly came up with a circuit to solve the problem). Apologies for any confusion.
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