Re: Slowman is a LIAR, was OT: Why welfare doesn't work!

On Sep 14, 5:21 pm, "Michael A. Terrell" <mike.terr...@xxxxxxxxxxxxx>
wrote:
bill.slo...@xxxxxxxx wrote:

I don't have a clue about his circuit designs - for all I know the
defects of the MC4024 and the MC4044 which I did use (once) were all
forced on him by the limitations of the Motorola process technolgy of
the time. I've been much happier with more recent Motorola parts,
which does suggest that Jim might have been less competent than his
successors.

   You are the only one I've ever head complain abut these simple phase
detectors. I have seen them in a lot of commercial & industrial
products. Commodore used the MC4044 in over seven million C64 computers.
If it was as bad as you claim, they could have never shipped that many
working computers.

The MC4046 put the phase detectors from the MC4044 and a much VCO that
the MC4024 offered in a single package. It took years before the
Philips 74HCT9046

http://www.nxp.com/acrobat_download/datasheets/74HCT9046A_5.pdf

fixed the bug in one of the phase-detectors (see Fig 8 on page 8).

I'm not saying that the parts couldn't be made to perform - I got them
to do what I need them to do - but they were clumsy and awkward.
Quite a lot of that obviously came from Jim having built the parts
with a TTL process - CMOS supports the application a lot better - but
my impression at the time was that they could have been made easier to
use, even within the limitations of a bipolar process.

--
Bill Sloman, Nijmegen
.

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