Tach Wire

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TTopStang

Member - Posts: 19

Joined: December 07, 2002

Location: United States

Posted: December 19, 2002 at 10:39 PM / IP Logged

PLEASE TELL ME I’M NOT LOSING MY MIND!! Work with me here. You have two voltage options on a meter AC/DC (also a great band). AC is Alternating Current and DC is Direct Current. DC is used in applications where the current direction is fixed in one direction such as a battery and AC is used in applications where the current is switching directions such as in homes. I’m correct so far, right? Why then, do a lot of people, in numerous places, state to set the meter to AC when working on their car when it should be DC? Are you just playing a little joke on these people? If so, I’m sorry to have spoiled the joke, otherwise, I’ve lost my mind and maybe someone can teach me again.

JWorm

Platinum - Posts: 2,208

Joined: December 11, 2002

Location: New Hampshire, United States

Posted: December 19, 2002 at 10:52 PM / IP Logged

TTopStang, a tach signal is AC. The output of an amplifier is also AC. A car is not 100% DC.

TTopStang

Member - Posts: 19

Joined: December 07, 2002

Location: United States

Posted: December 19, 2002 at 11:14 PM / IP Logged

Thanks JWorm. It's all starting to come back to me. Now where did I leave my keys?....LOL

Velocity Motors

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Joined: March 08, 2002

Location: Manitoba, Canada

Posted: December 20, 2002 at 7:52 AM / IP Logged

Here is a thread from another member about this topic:

How to use a DMM

Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

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Tach Wire

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