25 Jan
2006
25 Jan
'06
12:52 p.m.
On Tuesday 24 January 2006 05:18 pm, Tony Duell wrote:
Or, if there's any resistance in series with that coil, couple a
negative-going pulse to it by way of a capacitor. This worked out real well
for me with a couple of SCRs one time, with a 100nF cap between the anodes.
The second one being turned on while the first one was already on would
definitely turn the first one _off_, in spite of them not being spec'd that
way. The loads in this case were #47 light bulbs.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
Could you
really make a memory cell with 1 relay per bit using standard
relays? Latching relays, perhaps, but regular "make on coil
current/break on no current" relays?
Who said anything about 'standard' relays? I was certainly considering
multiple coil or latching realys.
With stnadard relays, you can make a latch with one relay (connect an NO
contact in series with the coil across the supply). You need to put a
break contact of some other relay in series with that so as to be able to
reset the latch