8 Feb
2016
8 Feb
'16
7:08 a.m.
Make sure to neutralize the leaked alkaline stuff from the cells.
Just a simple cleaning isn't enough. I use white vinegar.
Dwight
________________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Maciej W. Rozycki
<macro at linux-mips.org>
Sent: Monday, February 8, 2016 6:55 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: NiCd battery replacement in vintage computers
On Sat, 6 Feb 2016, Chuck Guzis wrote:
You're talking about RTC and perhaps a bit of
static RAM maintenance. If this
RTC unit is like most of the same era, the operating voltage range is quite
wide (probably about 2-7V) and sub-1ma current draw. Chargers for this type of
application are usually very low current, so "cooking' some AA cells is a very
remote prospect. This is hardly a power-hungry project.
As a matter of interest I've checked the MC146818 datasheet and it claims
a 50?A current draw in the usual configuration with a 32768Hz oscillator.
Maciej