how to decrease voltage
Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=39334
Printed Date: May 10, 2025 at 10:49 PM
Topic: how to decrease voltage
Posted By: oshi
Subject: how to decrease voltage
Date Posted: September 18, 2004 at 5:24 PM
high i was thinking about tyring something on my car and i was wondering how i can reduce the 12v from an output to about 50 percent so about 6v. what resistors could i use and how should they be wired.
Replies:
Posted By: furflier
Date Posted: September 18, 2004 at 6:44 PM
What are you trying to connect? A little more info would help.
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Posted By: oshi
Date Posted: September 19, 2004 at 2:12 AM
well im thinkin about a DIY daytime running lights. just wanted to know how i could get 12v to down to about 6v or so to have about half intensity for the high beams.
Posted By: dpaton
Date Posted: September 19, 2004 at 10:29 AM
The facory way is to use some huge-ass resistors. To figure out the R, you need to know the hot R of your high beams (cold resistance is a lot lower). Basically you want to build a voltage divider. Just make sure your dropping resistors are up to the challenge (P = I^2 * R).
-dave
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