hardwire battery operated devices?

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=56420
Printed Date: May 12, 2025 at 4:44 AM

Topic: hardwire battery operated devices?

Posted By: metz35
Subject: hardwire battery operated devices?
Date Posted: May 25, 2005 at 4:15 PM

has any one ever installed/hardwired any battery operated devices into a car, ie, 2way radio, boombox, the device takes 3 AA batteries, what else special do i have to do besides using a resistor, how can i calculate the needed resistor, ? any help would be great!

Replies:

Posted By: Mad Scientists
Date Posted: May 28, 2005 at 8:52 PM

https://rocky.digikey.com/WebLib/Panasonic/Web%20data/AN77Lxx,AN77LxxM%20Series%20revised.pdf

Use a 4.5 volt regulator..I use 12v batteries often to power less than 12v appliances...

Jim

Posted By: metz35
Date Posted: May 29, 2005 at 3:49 PM

where can i get a regulator, how much are they? i need many, for a show car i am doing, if they are expensive, is there a away for me to make something?

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