Star Tech Journal

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the opto NOuld still functior1 correctly.
resistors on an Atari CENTIPEDE
their original value of around 3
thousand ohas to over 12 thoJJsand ohllS arid
not lost the effective function of the
optocoupler. Also, the 100 ohm resistor of
the Atari late IIOdel opto board can be
increased to 220 ohlls without a loss of
operation. You may want to try this if you
are having 110re than seldom failures or1
the trackball asse111bly.
li ■ iting
It aay be to your advantage, if you have a
gaae using optos, to increase the values I
aentioned of these current limiting
resistors, because the less current the
detector transistor has to pass, the
longer life it will have, and the same
goes for the LED.
I have increased the values of the
gaae
fro■
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