Re: [midatlanticretro] Re: Stuff for trade tomorrow...
- On 05/17/2013 11:03 PM, hornbetw wrote:
>>> One thing I am looking for though is a 558 A/D converter chip with anAhhhh. Well he said A/D converter, and I know I have a bunch of Analog
>>> early 1978 date code or earlier for my rev 0 Apple II.
>> Do you mean AD558? I have quite a few of those, dunno if their date
>> codes are early enough for you. Sadly I think Dan has already headed
>> east. If you don't end up finding one, let me know and I'll go check
>> date codes...a DIP is easy to drop in the mail.
>> -- Dave McGuire, AK4HZ New Kensington, PA
> I think he's looking for an LM558. It's a dual (or quad) LM555 timer used
> on the joystick port I think.
Devices AD558s...which, upon further thought, are D/A converters anyway, not
At any rate, I do have one or two NE558, but I don't know offhand where
they are at the moment. Sorry Cory!
Dave McGuire, AK4HZ
New Kensington, PA
- I think your right. Next times need to pull my glasses out to read the letters on the chip or look at the schematic.
When i was figuring out what i needed, I just put "558 IC" into my eBay app on my phone and got back it was something different than just a quad timer.
I guess now I maybe able to find one with the correct date.
Sometimes technology doesn't make it easier it creates work or confuses you.
--- In email@example.com, "hornbetw" <hornbetw@...> wrote:
> I think he's looking for an LM558. It's a dual (or quad) LM555 timer used on the joystick port I think.