DIY Voltage Meter (multimeter)

[elioacm]

is there a voltage meter like a multimeter on radioshack/Deeco(PH)

that is purpose only to calculate my remaining voltage on my battery..

ps: i like it to be little as possible not like a "multi"meter..
for example, a flash light that has a built in voltage meter...

 

[(*steve*)]

Yes, it's called a voltmeter.

There are many types. What voltage is your battery (nominally)?

Beware that a voltmeter will (slowly) discharge your battery so you don't generally leave it connected permanently.

 

[elioacm]

its 9 volts, when i finally bought one would you help me on how to make the connections.

 

[(*steve*)]

The simplest approach is to get a 0-1mA meter and place a resistor in series with it. When the resistor added to the meter's resistance totals 10k, the meter will read 0 to 10V.

 

[CDRIVE]

Historically,..and we're talking over a century, manufacturer data included on the meter face or marked on the rear of the housing, has never been standardized. Some manufacturers listed the basic movement's Internal Resistance or FSmV. Either made it easy to calculate multipliers and shunts. . Unfortunately many didn't and still don't.

Do you own a DMM?

Chris

 

[Rleo6965]

is there a voltage meter like a multimeter on radioshack/Deeco(PH)

that is purpose only to calculate my remaining voltage on my battery..

ps: i like it to be little as possible not like a "multi"meter..
for example, a flash light that has a built in voltage meter...

If your in Metro Manila Philippines. You can buy small digital meter from CD-R King worth P100.00 or $2.30

 

[CDRIVE]

If your in Metro Manila Philippines. You can buy small digital meter from CD-R King worth P100.00 or $2.30

Just remember that you can't use a digital meter (it requires a power source) to check its own battery. This means that you will have two batteries. The one you're measuring and the one that powers the meter.

Chris

 

[Rleo6965]

Here's the picture. I bought this compact DVM for emergency tools in my car.