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Posts Tagged ‘power supply’

Gophert CPS-3205C calibration

Monday, March 2nd, 2015

Florin of YourITronics writes: In this video I am calibrating the Gophert CPS-3205C power supply using my Keithley 175 4.5 digit multimeter and my adjustable dummy load. The calibration procedure is: 1. Set the V/A selector switch to A position, 2. Push the adjust knob then power on the power...

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DIY PSU console

Friday, January 23rd, 2015

Simon wrote a post on his blog detailing his DIY PSU console assembly: If I was going to build a power supply display add on, I decided to add some current limiting to it as well - but it had to be simple, cheap, and work with the panel meters. Yes you...

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App note: Power-supply solutions for Xilinx FPGAs

Sunday, October 19th, 2014

MAXIM's power solution for Xilinx' FPGAs. App note here (PDF!) Field-programmable gate arrays (FPGAs) are used in a wide variety of applications and end markets, including digital signal processing, medical imaging, and high-performance computing. This application note outlines the issues related to powering FPGAs.  

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Mini high voltage power supply

Monday, October 13th, 2014

Victor8o5 posted detailed instructions of how to make this high voltage power supply. He writes: WARNING: Before you start making anything please take a moment and read this: This circuit is intended to be used for educational and experimental purposes (electrostatic experiences, franklin bell experiment, plasma generation, gas ionization, electronic igniter,...

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Eurorack power supply from Dirty PCBs

Tuesday, July 22nd, 2014

ntractiv posted pictures of his Eurorack power supply from Dirty PCBs. Via Flickr.    

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Posted in PCBs | 1 Comment »

5v/3.3v power supply PCB

Wednesday, June 18th, 2014

MickM has been working on creating a power supply: Here is a simple but versatile power supply board. It uses either a TO-220 7805 or a TO-92 78L05 (or other voltages). Power LED is optional, and can be on-board or remote with a header. Power switch is optional, install a...

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app note: Simple Current-Limiting Power Supply

Sunday, April 27th, 2014

A simple current-limiting power supply from Micrel, app note here. Just three ICs are required to build this adjustable-voltage, adjustable-current-limit power supply that operates like a laboratory supply. It offers an output voltage range of 0V to 25V and a current limit range of about 10mA to 1.5A. The Micrel...

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Posted in app notes | 1 Comment »

Power bar, a small breadboard power supply

Monday, April 14th, 2014

NsN has been working on a power bar, a small breadboard power supply: The power bar is a small breadboard friendly power supply with three independent voltage regulators and built-in current monitoring. The target applications are small, mostly digital projects, which don't need a large 0-30V, 6A benchtop power supply, but...

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HP 6113A teardown And calibration

Thursday, February 20th, 2014

Kerry Wong writes: A couple of weeks ago I did a teardown of HP 6181C — a precision DC current source made in the late 70′s and early 80′s. This time around, I am going to show some pictures of an HP 6113A precision DC power supply and do a...

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A digitally controlled dual tracking power supply I

Monday, November 25th, 2013

Kerry D. Wong writes: Power supply is one of those things one can never have too many of. I have quite a few already, and my favorite one so far is the Topward 6603A. This dual 60V/3A tracking power supply satisfies most of my needs. I have since added an...

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ATX Bench power supply

Wednesday, August 7th, 2013

Nick Carter blogged about his DIY bench power supply with the ATX breakout board: There are tons of such projects out there on the internet but most involve hacking open the power supply and I didn’t think that was the way to go. I considered getting a cheap ATX adapter...

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Posted in ATX BB, power supply | 2 Comments »

Dummy electrical Load

Wednesday, July 24th, 2013

Debraj built an electrical dummy load to test his power supply and wrote a post on his site detailing it’s assembly: Recently, I purchased a power supply that claimed a max current of 2A and 0~15V. So I wanted to test it. I had a 36 watts bulb (used in motor...

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Posted in power supply, testing | 1 Comment »

App note: PWM Margining with the MAX34451

Saturday, May 18th, 2013

This application note outlines the performance of PWM margining when the MAX34451 is connected to the MAX15041 evaluation (EV) kit: Pulse-width modulation (PWM) margining is a simple technique to adjust the output voltage of power supplies. This application note discusses the effect of PWM on the power-supply output-voltage noise, the...

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Switch mode power supplies for wall adapters

Saturday, April 20th, 2013

[embed]http://www.youtube.com/watch?v=iBGXDlm8KzY[/embed] TI senior applications engineer, Robert Kollman discusses how quasi-resonance increases efficiency in switch mode power supplies for wall adapters.

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2-section filter for low noise power supply

Saturday, April 13th, 2013

[embed]http://www.youtube.com/watch?v=hIyvgEaKB8I[/embed] This video by Robert Kollman, TI senior applications engineer,  discusses how to use a two section filter for a low noise power supply.

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How to measure stability when testing power supplies

Saturday, April 6th, 2013

[embed]http://www.youtube.com/watch?v=HJSaIqWzM9w[/embed] Here is a video from Texas Instruments describing how to measure stability when testing power supplies.

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Another project-a-week: 3.3volt and 5volt power solution

Friday, February 15th, 2013

Rwinscot is attempting a project-a-week. This week he shared his RickPAW 3.3volt/5volt power project in the forum: This breakout could be used in an automotive application where bare wires are soldered into place and the whole package wrapped in shrink tube. Or... you might want to put a barrel jack...

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Posted in dev boards, project logs | 1 Comment »

Solar power supply

Monday, October 8th, 2012

Dolabra put together this 5 volt solar power supply. The solar panel recharges a single alkaline battery which is then boosted to 5volts via an NCP1402 breakout board. Maximum output is 200 mA. I broke all the rules -- I soldered directly to the battery and I'm recharging an alkaline....

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Posted in DIY, power supply | 2 Comments »

PROTOTYPE PREVIEW: Smoke Tester

Tuesday, September 25th, 2012

Here is the Smoke Tester. It's a board designed to safely power prototypes for the first time and see if there are shorts. Current can be measured using a voltmeter. Here's the full feature list. 5V and 3.3v voltage regulators 7V-15V input 3 possible input sources: USB, 2mm DC barrel...

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Posted in Prototypes, releases | 12 Comments »

Texas Instruments power management reference design library

Tuesday, September 4th, 2012

Texas instruments released the Power Management reference design library. It's filled with schematics, design notes, gerber files, and any technical document you might need to get over 300 reference designs up and running. Texas Instruments PowerLab™ Power Management Reference Design Library contains hundreds of reference designs for any application. Each...

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