Power / Batteries

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$1.90  
14 pc(s)
Enclosed battery holder for two AA cells. This holder features a lid that slides over the batteries and snaps into place to fully enclose the cells. It also features a switch that lets you open and close the electrical connection between the batteries and the holder's leads. The leads are about...

$3.99  
3 pc(s)
This two channels Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. The digital input circuit is optically isolated from the relay, so your controller is protected from voltage spikes and surges. The module is controlled with 5V...

$1.99  
Out-of-stock
This Single Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. Applications include solenoid valves, lamps, motors and other high current or high voltage devices. The modules are controlled with 5V signal and they are pre-soldered. A...
Out-of-stock

$2.80  
Out-of-stock
This is a 9V battery pack with on/off switch and terminated with a standard 5.5x2.1mm, center-positive barrel jack. Use this to battery-power your Arduino or other electronic projects. Battery & screw not included. Dimensions : 68mm x 33mm x 21mm Lead length: 12cm...
Out-of-stock

$0.50  
94 pc(s)
Classis 9V snap connectors with color-coded wire leads. Great for replacements or projects. Length: ~ 15cm

$42.50  
4 pc(s)
The SWADJHV is the a high-voltage edition of our popular DE-SWADJ adjustable switching reulators. It is designed to accept an input voltage ranging from 5-60V, allowing you to power a variety of applications from extremely high-voltage sources. The SWADJHV is pin-compatible with the common 78XX...

$42.00  
6 pc(s)
The DE-SWADJ 3 is a larger version of our DE-SWADJ adjustable step down voltage regulator. Previously it was necessary to put multiple DE-SWADJ units in parallel to achieve ratings over 1A, which was bulky, expensive and carried with it a considerable increase in dropout voltage. The...

$24.50  
2 pc(s)
The DE-SWADJ is the adjustable version of our SW0XX step down voltage regulators. It is designed to be the easiest possible way to add an adjustable voltage source to a new or existing project with all the efficiency benefits of switch-mode power. The DE-SWADJ is pin-compatible with the...

$1.90  
29 pc(s)
This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small phillips head screw. Another bonus is the ON/OFF switch which can be used to control power to your project. The leads are about...

$2.50  
36 pc(s)
This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm, center-positive male barrel jack. If you need to connect bare wires to a barrel jack on an Arduino or a development board, this might be the simple solution.

$2.95  
2 pc(s)
This is a simple cable that adapts from a USB port to a 5.5x2.1mm barrel connector, center positive. This cable allows the user to use a USB port on a computer, laptop, or on our cigarette power supply to provide our development boards with 5V. The USB specification limits current...

$2.50  
3 pc(s)
Enclosed battery holder for four AA cells. This holder features a lid that slides over the batteries and snaps into place to fully enclose the battery. It also features a switch that lets you open and close the electrical connection between the batteries and the holder's leads. The leads are...
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