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From: Tony Williams
Subject: Re: zero-power toggle circuit; was, how to master electronics
Date: Fri, 22 Nov 2002 16:29:42 +0000 (GMT)
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NNTP-Posting-Date: Fri, 22 Nov 2002 16:30:44 +0000 (UTC)
User-Agent: Pluto/1.14i (RISC-OS/3.60)
In article ,
Winfield Hill wrote:
> You mean TG2, right? Why not use the switch directly and
> eliminate TG2 entirely? Now two free TGs are available.
I suspect that using TG2 or not depends on how
far away the switch is from the circuit.
> I'm looking at the TG3 + 10k MOSFET driver, wishing that it
> provided robust drive for both HIGH and LOW. I'm looking at
> the two unused TGs; they could create a MOSFET driver. TG3
> can serve new duty as an inverter for one of the output TGs.
> Now I'm thinking about insuring a latency between one driver
> TG going off and the other turning on. Perhaps two series
> resistors can replace the TG1 toggle flop's 10k to assist in
> the task of creating nested pulses for the two driver TGs.
If you are heading in this sort of direction Win
have a look at the 4007A. There may be some
useful extra flexibility available.. the inverter
is already there, and a p-type pullup for TG1.
No TG2, but maybe a spare for TG4.
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