how to decrease voltage

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oshi

Member - Posts: 10

Joined: September 18, 2004

Location: United States

Posted: September 18, 2004 at 5:24 PM / IP Logged

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.

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furflier

Copper - Posts: 236

Joined: June 14, 2004

Location: United States

Posted: September 18, 2004 at 6:44 PM / IP Logged

What are you trying to connect? A little more info would help.

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oshi

Member - Posts: 10

Joined: September 18, 2004

Location: United States

Posted: September 19, 2004 at 2:12 AM / IP Logged

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.

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dpaton

Copper - Posts: 141

Joined: July 19, 2004

Location: United States

Posted: September 19, 2004 at 10:29 AM / IP Logged

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

This is not a sig. This is a duck. Quack.

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how to decrease voltage

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