Re: car electronics - rectifier

From: MZ (zarellam_at_removetwcny.rr.comspam)
Date: 11/05/04 

Date: Fri, 5 Nov 2004 14:27:37 -0500

> A zener would require the appropriate resistor in series with it,
> based on current draw and potential difference, to drop the excess
> voltage also.

I smell dead battery.

A zener-resistor circuit alone is not the answer, short of triggering it
with the ignition wire. Even then, the zener will probably get pretty hot.
The car voltage and LCD current draw fluctuates too much to be able to
accurately choose a resistor that will work well with a small zener.

(when I refer to the LCD current draw fluctuating, I mean that it changes
based on the brightness setting on the LCD. I change mine based on whether
or not it's dark outside)

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