🚀 go-pugleaf

In article <1990Jun2.182334.21396@athena.mit.edu> maddog@athena.mit.edu (Matthew J Marjanovic) writes:
> Is it possible?
> Someone gave me a supposedly broken tape player to look
>   at, and while I was doing comparitive studies with CD recordings
>   I noticed that my CD player was running just a little bit slow:
>   everything was just a bit flat, and a good tape player would
>   perceptibly overtake the CD in about ten seconds.

Have you considered the possibility that the tape player(s) may be
running fast ?

It's kind of hard to make quartz-oscillator digital circuits run slow
(i.e. all the servo controls and digital-to-analog conversion in the CD),
while it's very easy to have an analog controlled motor and belt system
with all analog front end (i.e. the tape player) be a bit off.

Then again, maybe the quartz oscillator _is_ out of whack, but I doubt
it. Usually they are spec'd to a few p.p.m. (parts per million) precision,
and if the capacitors in the circuit around the quartz go bad, it just
does not run.

Check it CD against CD, and tell us, huh ? Or just check the time
elapsed count against a watch.

--
Antonio B. Leal			Dept. of Electrical and Computer Engineering
Bell: [412] 268-2937		Carnegie Mellon University
Net: abl@maxwell.ece.cmu.edu	Pittsburgh, PA. 15213   U.S.A.