Dual output (5.0V/3.3V) breadboard power supply

Name: Dual output (5.0V/3.3V) breadboard power supply
SKU: 977
Price: 5.99 USD
Availability: OutOfStock

(3 Reviews)

Easy breadboard-pluggable power supply board for rapid prototyping

Sold By Embedded Lab

Dual output (5.0V/3.3V) breadboard power supply 1

Dual output (5.0V/3.3V) breadboard power supply 2

Dual output (5.0V/3.3V) breadboard power supply 3

$5.99

Out of Stock

Sold out since Dec 03, 2019

Easy breadboard-pluggable power supply board for rapid prototyping

Overview This is a very simple breadboard power supply board that takes power from a DC wall wart or an USB port (requires a mini USB cable) and provides dual output voltages (5.0V and 3.3V). The out…

Overview

This is a very simple breadboard power supply board that takes power from a DC wall wart or an USB port (requires a mini USB cable) and provides dual output voltages (5.0V and 3.3V). The output voltage for each breadboard rail can be selected through a 2-pin shunt jumper. A 9V battery clip with 2.1mm DC barrel connector is also provided with the module. Here are the detail features of this power supply module.

Operates at 7 to 12V DC input
PTC resetable fuse for USB port overcurrent protection
Fixed output voltages of 3.3V (max 100mA) and 5.0V (max 500mA). Maximum combined current is 500mA.
Standard 2.1mm x 5.5mm DC barrel jack for connecting a DC wall wart
Mini USB port for power input from a PC's USB port
Useful for powering low current (upto 500mA) prototyping circuits
Power-on indicator LED
Fully assembled and tested

What is included

1 breadboard power supply module
1 9V battery clip

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Review Breakdown

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David | June 22, 2014

Best breadboard power supply I've found anywhere

I have a variety of breadboard power supplies that get used on nearly every one of my projects at some point. While several of them provide both 5V and 3.3V you have to chose one or the other so can only have either 5V or 3.3V for your project. For projects that need/use both voltages, having to mix power sourcing from a breadboard supply and an Arduino is inconvenient. I couldn't understand why someone didn't make a true dual voltage supply and so was delighted to find this product.

I like the that the board fits directly into the breadboard rails, and that you can select 3.3V or 5V independently for each rail. It's also important that + and - are marked clearly on their board as not every breadboard has the same arrangement of positive/negative rail markings -- some are exactly opposite others, so it needs to be easy to confirm that you have +/- wired properly.

Including both a 2.1mm DC jack and a mini-USB connector as external supply collections is an excellent feature, as is the inclusion of a 9V battery connector with the board.

I do wish an on/off switch was built in so I could leave everything wired up on my workbench and just flip the supply off. Perhaps that'll get added in a future version.

Overall this is now my favorite breadboard power supply, and one that gets used all the time.

James | Dec. 23, 2013

2 Voltage breadboard power supply

Well built and designed. I use as much as I do my breadboard!!

Brandon | Nov. 22, 2013

Not ideal, but not bad.

This is a solidly built little board, but a few of the solder joints on the one I received are a little iffy (cold joints, pads not entirely covered). It works as intended, but I'd suggest two changes to future revisions of the board. First, make the polarity on both outputs match the markings on most common breadboards +/- & +/-, rather than the current +/- & -/+ (see the photos). Second, include an SMT slide switch to cut power, without having to unplug the cables.

While it's not ideal, overall it's not a bad breadboard supply. Two nice features are the added stability that comes from doubling up the headers and the USB mini-B port. While not significantly better, it's no worse than the others I've tried (SparkFun Breadboard Power Supply Stick 5V/3.3V & Adafruit Adjustable breadboard power supply kit - v1.0). Note that it may be cheaper to purchase directly from Elecrow (www.elecrow.com is silk screened onto the bottom of this board).

http://www.elecrow.com/power-supply-c-68/chargers-adapters-c-68_95/breadboard-power-supply-p-345.html

I guess, if you want an ideal breadboard supply... design and build your own.

$5.99