Power Supply & Monitor

Mini 3-wire Volt Meter (0 - 99.9VDC)

PRODUCT ID: 705

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but we thought it...

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but we thought it would be great on a breadboard or enclosure. This is the 3-wire version of the volt meter, two wires are used to power it and the third wire is used for measurement. We also have a 2-wire version that measure it's own power supply. Simply connect the red wire to a positive power supply from 4.5 to...

$7.95

IN STOCK

Panel Volt Meter - 4.5V to 30VDC

PRODUCT ID: 575

Put a voltage meter anywhere with this very handy display. This panel meter simply connects to whatever DC supply you are trying to track, easy to...

Put a voltage meter anywhere with this very handy display. This panel meter simply connects to whatever DC supply you are trying to track, easy to wire up! Simply connect the red wire to the positive supply, and black to negative ground. The display has a microcontroller that will read the voltage, compare it to a stable reference and display the voltage with 0.1V precision on a 3-digit 0.56" tall 7-segment display. It works from 4.5V up to...

$7.95

IN STOCK

Mini 2-wire Volt Meter (3.2 - 30 VDC)

PRODUCT ID: 460

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but we thought it...

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but we thought it would be great on a breadboard or enclosure. This is the 2-wire version of the volt meter, two wires are used to power it and measure at the same time. We also have a 3-wire version that measure a wider range of voltages. Simply connect the red wire to the positive supply, and black to negative ground....

$7.95

33 IN STOCK

Panel Current Meter - 0 to 9.99A

PRODUCT ID: 574

Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to run, and then has two thick gauge wires to...

Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to run, and then has two thick gauge wires to measure current draw. A shunt is already on board so its very easy to hook up! Since current sensors are a little more complex than volt meters, and its easy to confuse the wires, please read carefully to understand how to wire it together! The current meter has two sets of wires, one thin (red and...

$9.95

IN STOCK

Mini Power Meter with Voltage, Current, Watts, mAh & mWh Display

PRODUCT ID: 3624

This Mini Power Meter with Voltage, Current, Watts, mAh & mWh Display (whew that is a mouth-full) is a lot like the USB In-Line Voltage and...

This Mini Power Meter with Voltage, Current, Watts, mAh & mWh Display (whew that is a mouth-full) is a lot like the USB In-Line Voltage and Current Meter we carry but can be used with a wide range of voltages (not just USB connections). Measure the working voltage and current output for any project with this really fancy power meter. This power meter has a small LCD display that shows off voltage, watts, amps, and mAH and instantly...

$24.95

92 IN STOCK

Panel Temperature Meter / -30 to +70 °C

PRODUCT ID: 576

Put a temperature meter anywhere with this very handy display. This panel meter displays the temperature of the attached waterproof 1% thermistor in...

Put a temperature meter anywhere with this very handy display. This panel meter displays the temperature of the attached waterproof 1% thermistor in °C. It does require a DC voltage to run, at 4.5-30VDC. It has reverse polarity protection in case you swap the power leads by accident. To use, simply connect the thin red wire to a positive supply, and the thin black wire to ground. Then tape the black thermistor bulb to whatever you want to...

$9.95

13 IN STOCK

Large Panel-Mount Digital Power Meter - 6.5V to 100VDC up to 20A

PRODUCT ID: 3626

What do you do when you need a variety of measurements on your current project? (pun intended!) You could buy a slew of test equipment tools OR...

What do you do when you need a variety of measurements on your current project? (pun intended!) You could buy a slew of test equipment tools OR you could use this very nice panel-mount multi-function power meter! This power meter comes with a nice, big (and backlit!) LCD screen to display voltage, current, power, and energy parameters. You can use this meter to find out if your voltage is too low or your current draw is too high. It...

$17.50

23 IN STOCK

FriedCircuits USB Tester v2.0

PRODUCT ID: 1456

USB has become the core of many projects, but it's troublesome to test USB voltage levels and current usage using a breadboard. Some people try...

USB has become the core of many projects, but it's troublesome to test USB voltage levels and current usage using a breadboard. Some people try to splice cables and alligator clip onto frayed ends, but it's difficult to get solid readings. This USB Tester will make it much easier to monitor any USB project's power source. As part of the USB spec, ports are limited to 500mA, so you want to monitor how close you are. Most people use...

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$11.95

OUT OF STOCK

Triple Output 195 Watt Power Supply - 30V, 30V, 5V @ 3A - DP832

PRODUCT ID: 2014

Stop noodling around with an LM317 and wall wart - you can wield all the power with the DP832 Triple Output 195 Watt Power Supply! If you're...

Stop noodling around with an LM317 and wall wart - you can wield all the power with the DP832 Triple Output 195 Watt Power Supply! If you're doing any kind of electronics past Arduino-type hacking, you've probably been in a position where you need reliable power and the ability to source, analyze, and coordinate it to best suit your needs. A motor that wants 12V @ 2A? 5V @ 3A? Current-limited power for testing out high-watt...

$545.95

3 IN STOCK

Adafruit USB Power Gauge Mini-Kit

PRODUCT ID: 1549

This little USB port go-between is like a speed gauge for your USB devices. Instead of hauling out a multimeter and splicing cables, plug this in...

This little USB port go-between is like a speed gauge for your USB devices. Instead of hauling out a multimeter and splicing cables, plug this in between for a quick reading on how much current is being drawn from the port. Great for seeing the charge rate of your phone or tablet, checking your battery chargers, or other USB powered projects. There are a few USB power meters out there, The Practical Meter and the USB Spypow. We wanted something...

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DISCONTINUED

EEVblog uCurrent - Precision nA Current Measurement Assistant - v3

PRODUCT ID: 882

An essential companion when working on a ultra-low-power projects! If you've ever used a portable multimeter (even your $300 Fluke!) to measure...

An essential companion when working on a ultra-low-power projects! If you've ever used a portable multimeter (even your $300 Fluke!) to measure sub-uA currents - say for a low power microcontroller or sensor project - you may notice that you're not getting the precision you expect, or that your project is acting finicky. How is this possible? – It’s called Burden Voltage. Many people are aware of Burden Voltage, but few...

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DISCONTINUED