[TR] gas gauge and voltage regulators
Dave
dave1massey at cs.com
Fri Jul 3 06:54:00 MDT 2015
That sounds like a challenge. Stand by. ;-)
Dave Massey
-----Original Message-----
From: Randall <TR3driver at ca.rr.com>
To: triumphs <triumphs at autox.team.net>
Sent: Fri, Jul 3, 2015 7:12 am
Subject: Re: [TR] gas gauge and voltage regulators
> Electronics is polarity sensitive although an electronic
> stabilizer
(regulator) can be designed to work with wither
> polarity by including a full
wave bridge and retuning the
> circuit to compensate,
Hmm, maybe I'm
missing something. Seems to me that a full wave bridge wouldn't do, because the
senders have to return to chassis
ground. The only way I can see to implement
this would be basically two complete regulator circuits with steering diodes so
only
one is functional.
Lots easier to just use a circuit that matches the
car polarity, which is what the vendors do. Eg Moss sells 131-555 for
negative
ground, and 131-556 for positive.
It's also pretty easy to build
one for yourself. I used the can from an old stabilizer (with bad contacts)
similar to what's
shown
here
<http://bob_skelly.home.comcast.net/~bob_skelly/voltageStabilizer/voltageStabilizer.html>
But
there's no reason you have to use the can, it's just a convenient package (with
terminals).
If you want positive ground instead of negative, use a 7910
instead of the 7810, and switch the polarity of the capacitors.
-- Randall
** triumphs at autox.team.net **
Donate:
http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums:
http://www.team.net/forums
Unsubscribe/Manage:
http://autox.team.net/mailman/options/triumphs/dave1massey@cs.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/triumphs/attachments/20150703/96d0c417/attachment.html>
More information about the Triumphs
mailing list