From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2002-09-26 20:07:56
Today I received a bunch of Commodore calculators and a SuperPET 9000
from George Page via Bo Zimmerman. (Thanks, Bo!)
Most calculators run at a 9-volt battery, which is no problem. Two of
them (the Commodore 202 and 207 adding machines) are mechanical, driven
by a single electric motor. In the 202, there is a capacitor next to
the motor; the 207 (a downgraded version of the 202) seems to be
equipped with a smaller motor and perhaps no capacitor. What do you
think, could I run these motors somehow off 220 volts? It should be
noted that some functions of the machines need quite much mechanical
power. Especially returning the cursor to the beginning of the line
required so much torque that I almost thought I'd break the mechanism
when I manually rotated the motor axis.
The Commodore US*1 calculator is very weird. It has a 7-segment
numerical display (possibly a fluorescent one) and at least one IC in an
all-golden package, but it appears to run directly off 110 volts, or at
least without any transformer. Maybe this one would run on a cheap
transformerless 240->110 volt converter (one based on a diode), as it
probably won't need that much current.
Then there's the SuperPET 9000 with a 320902-02 power supply. Can it be
easily converted to 240 volts? If not, I think I can mount the power
supply of my 8032 there. Hmm, does anyone have a SuperPET 9000 in a
8032-SK case? :-) Oh, and is the D25F connector inside the SuperPET, on
the left-hand side of the daughter board, the RS-232 connector? I saw a
hole on the left-hand side of the case; maybe you are supposed to run an
RS-232 cable to the internal connector through that hole?
I'll have more questions in a few weeks, when the B128s arrive per
surface mail. :-)
Marko
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail 2.1.4.