[sebhc] IC information

[Glyn Firth]

Thanks for all  the input - will put the 7905 in this weekend. Will advise! 
(I feel that since this IC fed the ROM ic I may have more problems)
Thanks again.
Glyn
----- Original Message ----- 
From: "Dave Dunfield" <dave04a at dunfield.com>
To: <sebhc at sebhc.org>
Sent: Monday, February 28, 2005 3:51 AM
Subject: RE: [sebhc] IC information


>>>The 7905 should be mounted on a heatsink, you can use the same
>>>heatsink as the other regulators are on.  Verify that the exposed
>>>metal back is ground, if it's not, you will need an insulator.
>>
>>Do there actually exist any 7905s where the metal case or tab is ground?
>
> I've never seen any variant of the 7905 where the tab was ground (really
> inconvienent)... However, the current requirements of an 8080 on the -5v
> supply are < 1ma I doubt he needs to headsink the regulator.
>
> Regards,
> -- 
> dave04a (at)    Dave Dunfield
> dunfield (dot)  Firmware development services & tools: www.dunfield.com
> com             Collector of vintage computing equipment:
>                http://www.parse.com/~ddunfield/museum/index.html
>
>
> --
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