strangely enough if i'm not mistaken the TG-16 and
CD combo has an interesting querq to it.... (bout
to get real technical) The all use the old 3-pin
regulator style supply so if i'm not mistaken the
systems use +5 only, yes? If that is true and you
have an old computer power supply laying around
you should be able to direct connect the +5 from
the sup. right into the power jack on the back.
=) The way the regulators work, usually you have
to be at least 3V above +5 for the regulator to
regulate. ususally anything above that up to
15/18/24V (depending on type) will also work.
however go below that and the regulator quits
regulating i.e. put 7V in get little less the 7V
out not regulated +5. same if you put +5 in you'd
get just a couple a 1/10ths of a volt less out.
and most logic (i beleive everyone was using CMOS
by then not TTL) has a tolerence or like 4.7-5.5 V
DC the important thing isn't really what voltage
inside that range you pick, it's that the voltage
STAY CONSTANT hence the need for regulators.