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Archive for the ‘power supply’ Category

High voltage power supply for Nixie tubes

Friday, April 8th, 2016

Limpkin has published a new build: a high voltage power supply for Nixie tubes For quite a while I've had this project idea in the back of my head that would involve using many Nixie tubes. These funny looking cold cathode displays were actually introduced during the 1950s and unfortunately...

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Low voltage power supply unit

Thursday, March 24th, 2016

Dilshan Jayakody writes: In this post we introduce simple and flexible, regulated low voltage power supply unit. This power supply has provision for 4 outputs such as 1.5V, 1.8V, 2.5V and 3.3V. We mainly build this low voltage power supply unit to test (and power-up) low voltage MCUs, CPLDs and...

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Posted in power supply | 4 Comments »

48V Phantom power supply

Wednesday, October 28th, 2015

Dilshan Jayakody has designed and built a 48V Phantom power supply: Phantom power supply is widely used in audio industry to power the active microphones over single audio cable. Most of the phantom power supplies deliver 48V DC over the balanced audio link and power supply unit described in this article...

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Amrel PPS-2322 programmable power supply teardown

Friday, May 8th, 2015

Kerry D. Wong did a teardown of a Amrel PPS-2322 programmable power supply: I picked up an Amrel PPS-2322 programmable power supply from eBay recently. You probably have not heard of the Amrel brand before as American Reliance (Amrel) no longer makes power supplies nowadays. Its power supply division was acquired by...

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HP Agilent E3611A power supply teardown and calibration

Wednesday, May 6th, 2015

Florin of YourITronics did a teardown and calibration of a HP Agilent E3611A power supply: I got this HP Agilent E3611A from Ebay. It was marked as not working and I was planing a repair video on it. Unfortunately the unit turned out to be fully functional so I only did a...

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3A Power supply for USB devices

Tuesday, May 5th, 2015

Jayakody published a new build, a 3A Power supply for USB devices: This is 5V 3A power supply to drive two USB based devices simultaneously. This power supply is design around LM2576-5.0 switching regulator IC and the main reasons to choose this IC is its low parts count, small heat sink requirements...

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Posted in power supply, USB | 8 Comments »

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 »

3.7V Li-Ion battery charger circuit

Monday, March 2nd, 2015

From the comments on our earlier standalone Linear Li-Ion battery charger with thermal regulation in ThinSOT app note post, Jan writes: Nice chip, indeed. Unfortunately not easy to find stocked – here I can get it only from Farnell (5 euro + VAT a pop) or Digikey ($3/pc + VAT +...

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Posted in power supply | 6 Comments »

Simple DIY lab power supply

Monday, January 26th, 2015

Bajdi  made this DIY lab power supply and wrote a post on his blog detailing its assembly: My DIY lab PSU has 10 binding posts in total. The ones on the left provide 12V, 5V and 3V3. The 12V output comes straight from the laptop power supply. The 5V and 3V3 are...

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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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Digitally controlled bench PSU project update

Monday, October 20th, 2014

Yet another update on Bertho’s digitally controlled bench PSU project we covered previously: Did some test-bed assembling today and did a dry-test of the power board. The good news... the power board did not blow up ;-) The aux PSU for +/-12V analog and the 5V logic supply switcher is working...

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Posted in DIY, power supply | 1 Comment »

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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DIY small bench power supply

Tuesday, September 23rd, 2014

newtonn2 posted detailed instructions of how to make this DIY small bench power supply that can adjust with precision current or voltage: After making my Mini Adjustable Power Supply I was very happy with it, but I was missing a more accurate control of the voltage and current. So I...

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ATX Breakout Board bench-top power supply build

Friday, September 19th, 2014

Kevin Rye shared his ATX breakout board bench-top power supply build in the project log forum: It took 3 weeks for my ATX Breakout Board to arrive from Seeed, but I finally got it! I was so excited to finally be able to make a bench-top power supply. I've always wanted...

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Posted in ATX BB, power supply, project logs | 3 Comments »

Digitally controlled bench PSU project update

Monday, September 1st, 2014

An update on Bertho's digitally controlled bench PSU project, we wrote about it previously: Finally some spare time to get the PCBs finished and on order. Lets see how many brainfarts are there to be discovered ;-) Expected delivery in a couple of weeks, so there is some time before I can...

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Posted in power supply | 6 Comments »

DIY 60W adjustable electrical load

Friday, August 22nd, 2014

A DIY 60W adjustable electrical load project from Electro-Labs: In this project, we are building a useful board which should take place on your bench. It is an adjustable electrical load which can sink up to 5A @ 60W continuously. This board will come to aid when you need to draw...

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Eddystone EC10 communication receiver restoration and PSU add-in

Monday, August 18th, 2014

Dilshan Jayakody writes: Recently I got vintage Eddystone EC10 MK1 communication receiver from friend of mine and it is completely dead when it comes to me. EC10 MK1 is one of Eddystone's very early solid state communications receivers and it use 10 PNP Germanium transistors. This receiver cover 550 kHz...

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Posted in power supply, repair | 1 Comment »

Digitally controlled bench PSU

Thursday, July 31st, 2014

Bertho posted a digitally controlled PSU design in the forum. He writes: The design is for 0...30V and 0...3A (90W) controllable at ~1mV and ~0.1mA steps. The actual accuracy is still out for testing and I assume that noise and non-linearity will be a factor to look at when time comes. The...

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Posted in power supply | 2 Comments »

+/-12V dual power supply

Tuesday, July 29th, 2014

A power supply build by Rajkumar of Electronics Lab: This project is a solution to power up most of devices or projects requiring dual (+/-12V) power supply. Symmetric +/-12 VDC power supply has been designed for audio applications, can power up microphone pre-amplifier, audio buffers, audio mixer, distributions amplifier, headphone amplifier, VU...

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Hand powered USB charger from hacked IKEA flashlight

Saturday, July 19th, 2014

Werner sends this handy hack he found at IKEAHackers. Giovanni Gentile devised this simple hack which mods an IKEA Ljusa hand powered flashlight into a USB charger. "The procedure was simple, it was enough to eliminate some resistors and use a capacitor sufficient to handle the charge given by the...

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Posted in hacks, how-to, power supply, USB | No Comments »

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