25 Apr
2012
25 Apr
'12
5:48 p.m.
On 25 Apr 2012 at 16:32, Eric Smith wrote:
Chuck Guzis wrote:
I'd imagine that 5VDC for Vff will work if you simply derate the
capacity by about 17 percent and periodically swap the polarity of
the supply using a DPDT switch (after all, they didn't specify the
minimum frequency of the AC).
--Chuck
If that was the case, why didn't they go with
state of the art in
1972 and use the Signetics 25120 memory chip? --Chuck
Probably due to the inconvenience of needing 6.3Vac for the Vff
supply.