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From: Tony Williams
Subject: Re: zero-power toggle circuit; was, how to master electronics
Date: Wed, 27 Nov 2002 14:40:55 +0000 (GMT)
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NNTP-Posting-Date: Wed, 27 Nov 2002 14:41:19 +0000 (UTC)
User-Agent: Pluto/1.14i (RISC-OS/3.60)
In article ,
Win Hill wrote:
> According to my spice models it's working at 1.2V, and I
> wouldn't be surprise if it isn't working even below that,
> in the sense that it can remember and hold a state.
Fred's model doesn't seem to come alive until just
4000 CMOS is spec'd for 3V min. Is there anything
published for what happens below 3V? .... for all
mfrs of 4000 CMOS.
> Only if one intends working at 3V. If the minimum voltage
> expected for using the switch is say 5V (a dead 9V battery,
> and better suited for turning on a p-channel MOSFET), then
> there's are nice design margin available.
I don't know if this R-idea is viable as a generalised
way of setting the power-up state of a 2-gate bistable.
If it is, then operation over 3-18V would be nice.
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