[net.micro.apple] 50 Hz Apple ][

Thomka.es@XEROX.ARPA (07/31/84)

You are way off base with this one.
(Re: " . . may be able to adjust the disk drives using the . . .")

The drives run on the DC voltage supplied by the Apple.  You don't have
to do anything to the drives to make them run correctly.  That is, as
long as your Apple has the proper voltages fed to it.  As far as I know,
all of the Apple II power supplies are marked 50/60 Hertz, check yours.
The voltage requirements of the power supply, though, is another matter.
My power supply has a switch on it (covered up by a small plate) that
will allow me to switch the primary input to 220VAC instead of the usual
American 110VAC (or 115 or 118 or 120, as you may like).  With the power
supply fed properly the Apple will create all of its own voltages and
frequencies internally.  Which will then create the video (for the TV if
you have a US modulator) signals necessary to drive a US type of screen.
If you take your own monitor (or TV) and it will also run on the
European voltages, you will have no trouble with the Apple.

Inside the Apple are a lot of little touching arrow-heads and open
solder pads to convert the Apple to European standards.  They are only
to set the video signal up for the European video standards, for
instance 625 scan lines vs. the US 525.  If you have to use a monitor
that you buy "over there" then you may have to make those internal
modifications.  Unless you can find a monitor that will run both video
standards.

	Chuck

anthro@ut-ngp.UUCP (Michael Fischer) (08/03/84)

<>
One further note:  If you're content with no color and some black space
above and below the display, a PAL monitor will do fine.  I had no problems
running the apple and drive all over asia at 50 hz.  Contrary to a recent
(rather nasty) reply about printers I also had no problems running several
60hz printers during a period of two years at medium duty (50-100 pgs/day).

Michael Fischer anthro@ut-ngp