Posts Tagged ‘power supply’

DIY ATX Bench power supply

Monday, April 20th, 2015

@LuisMirandaAceb tweeted, "I started only with ATX PS and your breakout board but finally this is what I ended with... "  

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Posted in ATX BB, power supply | 7 Comments »

Kit assembly 0-30V 0-3A adjustable linear power supply

Thursday, March 19th, 2015

Florin of YourITronics writes, "In this video I am assembling a 0-30V 0-3A Adjustable Linear Power Supply kit. Will it work at first power on? Or will Murphy get me this time? Watch the video and see how I got myself into trouble. I also reverse engineered and got a schematic...

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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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Posted in DIY, power supply | No Comments »

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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Posted in project logs | No Comments »

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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Posted in Teardowns | No Comments »

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][/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][/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][/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 »

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