Caple C871i Manuel d'utilisateur télécharger pdf (Page 327)

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Apple II Computer Info

Organization: Electrical Engineering, University of Sydney

Lines: 15

Distribution: inet

Message-ID: <[email protected]>

References: <[email protected]>

<[email protected]>

NNTP-Posting-Host: cassius.ee.su.oz.au

In article <[email protected]> [email protected]

(Dave Althoff) writes:

>(Q: Can one obtain Apple ][ paddles)

>You could build your own...they are extremely simple. The toughest part

>is finding a 150K-ohm linear potentiometer.

Other values can be used, provided you compensate by changing the 0.022uF

capacitor to maintain the same RC time constant (which is 150Kohms x 2.2nF =

3.3ms with the supplied values). It's easiest to do this be decreasing the R

and then connecting a suitable capacitor from the wiper arm of the pot to

ground in your homebuilt paddle box, to avoid having to replace components on

the Apple motherboard. I did this with a couple of RS joystick controllers

(100Kohm) I picked up for two dollars, by putting in an extra 1.1nF capacitance.

Adrian.

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Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 327 of 572

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Caple C871i Manuel d'utilisateur Page 327

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