Is there a way to measure current with a standard Voltmeter?
I have been unable to find a reasonably priced digital panel multimeter, and most are overkill as I only want to measure volts and amps. The space I have available for the meter is limited, and could not fit an additional meter. The 3.5 digit mini LED voltmeter fits perfect, but I would like to add additional functionality.
I have seen scematics for DIY volt and amp meters, and they look identical save the i/o portions (along with connecting in series, the amp meter versions have additional resistors). This leads me to belive it is possible, but I have as yet been unable to find an explaination of how or why. Or, for that matter, a detailed reference on the ins and outs of current and amp metering.
Also, in the "panel meter connection" pdf available on this site, one picture has what is labeled a voltmeter hooked up to measure amperage. Is this a typo? or can I configure my meter this way and measure amps?
If this is, in fact, not possible, then do I really need to measure amperage? I'm building a variable power supply, so knowing voltage is a must, I know that much. Is that all I need? Am I worrying myself over nothing? Or is the answer so obvious, I'll feel like an idiot when it is explained to me?
Any help would be much appreciated.
Thankyou
Voltmeter Question
-
- Posts: 1
- Joined: Mon Mar 08, 2010 5:02 pm
- Contact:
Return to “Digital/ Analog Meter”
Jump to
- Please login to view more content
- Special note
- Administrative Category
- ↳ New Product on the board
- ↳ Latest News
- Sell & Wanted
- ↳ Laser products
- ↳ CNC products
- ↳ Electronics products
- ↳ Others
- Repair * Upgrade * Product evaluation logs
- ↳ Repair & Upgrade
- ↳ Product Lab
- ↳ Cutting & Engraving tips
- Discussion Board for our products
- ↳ FAQ (laser)
- ↳ Tips and new on the DSP & Software
- ↳ DSP Controller for CO2 laser
- ↳ AWC7824
- ↳ AWC7813
- ↳ Ruida R6445G/X
- ↳ DSP T9
- ↳ DSP X7
- ↳ DSP R5
- ↳ DSP E5
- ↳ DSP 608
- ↳ CO2 Laser Discussion
- ↳ News
- ↳ LO PR530 Desktop laser machine
- ↳ Auto focus laser head
- ↳ D40/K40 small chinese CO2 laser machine
- ↳ Introduction
- ↳ Metal Cutting/Engraving laser machine
- ↳ Artwork from DIY'er (share your art design)
- ↳ CNC zone
- ↳ Temperature Controller
- ↳ Electronics
- ↳ RF Wireless Controller
- ↳ Digital/ Analog Meter
- ↳ Laser & CNC products
- ↳ DSP controller
- ↳ Water Chiller
- ↳ Laser power supply
- ↳ XY gantry and frame
- ↳ Motor driver
- ↳ K40 small laser
- ↳ Temperature Controller
- ↳ Digital Volt Current Meters
- ↳ RF Wireless Controller
- ↳ LCD Module
- ↳ Digital AC/DC Power (Watt) Meter
- ↳ AC Power Frequency Meter
- ↳ Other electronics devices
- ↳ Water pump
- ↳ LED
- Software Download
- ↳ DSP Laser Controller
- Other Topics (you can make a request to to add a new topic)
- ↳ Flying
- ↳ Take a cup of coffee & relax
- ↳ Others
Who is online
Users browsing this forum: Bing [Bot] and 33 guests