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Re: Help, need apple II drive chips!

Subject: Re: Help, need apple II drive chips!
From: Patrick Schaefer <pa.schaefer@fz-juelich.de>
Date: 1999/01/28
Newsgroups: comp.sys.apple2
Organization: Forschungszentrum Juelich GmbH
References: <36b88d5e.79756950@news.brightok.net>

md wrote:

> I would like to find where to get the four chips in the drive:
> 74LS125  I found this one
 
> CA3146
Operational Amplifier, several manufacturers. National Semiconductor?

> MC3470P
Motorola. Obsolete now. Get one from an old disk drive.
This one will not blow from a reversed cable.

> ULN2003
This is also called XR2003. Made by TI, Exar and some other companies.
Very common chip, try to get one from an old printer.

After replacing one of the analog chips the drive has to be re-aligned.
The '125 and 2003 can be swapped without any adjustments.


Patrick

Follow-Ups:
- Re: Help, need apple II drive chips!
  - From: Wouter de Waal <bofhdec98@ccii.co.za>

References:
- Help, need apple II drive chips!
  - From: mdickins@brightok.net (md)

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