digital current meter

Home / the12volt's Install Bay / General Discussion / digital current meter (

Topic Closed)

Welcome Guest :)

Members

Search

Register

Login

< Prev Topic Next Topic >

wireless

Member - Posts: 6

Joined: August 15, 2004

Location: United States

Posted: February 25, 2007 at 11:30 AM / IP Logged

i need to reduce 12v to 5v in my car. can i do this via a resistor, like done with an LED? or do i need to do something more complex? simple is better.

Back to Top

wireless

Member - Posts: 6

Joined: August 15, 2004

Location: United States

Posted: February 25, 2007 at 11:35 AM / IP Logged

sorry guys, please remove this on, a message kept telling me my post was not submitted.

Back to Top

fakepete

Copper - Posts: 99

Joined: April 21, 2002

Location: United States

Posted: February 25, 2007 at 11:43 AM / IP Logged

How much current does the meter require?

Back to Top

wireless

Member - Posts: 6

Joined: August 15, 2004

Location: United States

Posted: February 25, 2007 at 4:51 PM / IP Logged

the meter requires 5v to power up and will read up to 30amps.

Back to Top

KPierson

Platinum - Posts: 3,527

This member consistently provides reliable information

Joined: April 14, 2005

Location: Ohio, United States

Posted: February 25, 2007 at 6:14 PM / IP Logged

Grab a 7805 5vdc voltage regulator from Radioshack.

Kevin Pierson

Back to Top

wireless

Member - Posts: 6

Joined: August 15, 2004

Location: United States

Posted: February 25, 2007 at 8:14 PM / IP Logged

how wold i go about putting that inline on the input side? 12v supply > 7805 5vdc voltage regulator > meter?

Back to Top

KPierson

Platinum - Posts: 3,527

Joined: April 14, 2005

Location: Ohio, United States

Posted: February 25, 2007 at 8:25 PM / IP Logged

There is an input pin (usually 7-30vdc), a ground, and a 5vdc output.

3 pins, and thats it!

Kevin Pierson

Back to Top

wireless

Member - Posts: 6

Joined: August 15, 2004

Location: United States

Posted: February 25, 2007 at 8:44 PM / IP Logged

ok, from all the diagram i've been looking at that regulator is usually accompanied by 2 small capacitors on a small pc board, so i didnt know if i could use it on its own or if i have to assemble a small circuit?

Back to Top

KPierson

Platinum - Posts: 3,527

Joined: April 14, 2005

Location: Ohio, United States

Posted: February 25, 2007 at 9:02 PM / IP Logged

The caps will help with the regulation, but if you have a constant input voltage (such as a car battery) and your output isn't constantly changing you should be able to get by without them.

Kevin Pierson

Back to Top

jmelton86

Gold - Posts: 1,228

Joined: February 07, 2007

Location: South Carolina, United States

Posted: March 14, 2007 at 2:24 AM / IP Logged

wireless, where did you find this meter?

2013 Kia Rio -90a alternator

DDX470HD GTO14001 GTO1014D (x3)

Big3 in 1/0G

1/0G to GTO14001

Back to Top

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

digital current meter

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.