Alan Parekh of Hacked Gadgets writes: Thanks to Circuit Specialists for sending in this 3 chanel power supply. The Hantek PPS 2320A sure packs in a ton of features for the price. The video below goes through the unboxing of the power supply and a quick run through its features. Overall it functions quite well, […]
A PCB layout for the switch-mode HV PSU by Jan Rychter: I’ve posted a page describing the design of a HV PSU (High-Voltage Power Supply) that generates up to 220V from a 12V input. In addition to that, it also provides 2*Vout (so, up to 440V, for dekatrons), and two outputs for powering digital logic: 5V […]
From the comments on our earlier HV Nixie DC-DC switching power supply post, here’s a Nixie HV switching PSU by Nick De Smith: It is probably beyond the scope of this simple document to describe the operation of switch-mode power supplies (SMPSs) – suffice to say the technique relies on the voltage pulse you get from rapidly collapsing […]
Michail Papadimitriou over at Electronics Lab designed a simple DC-DC switching regulator capable of powering most of Nixie tubes: The module is based on the MAX1771 Step-Up DC-DC Controller. This controller works up to 300kHz switching frequency and that allows the usage of miniature surface mount components. It accepts an input voltage from 2 to 16.5V […]
300V AC/DC variable power supply project by Dilshan Jayakody This 300V AC/DC variable PSU is designed for our vacuum-tube, MOSFET and some IGBT related experiments. This PSU consist with 0-300V Variac (variable auto-transformer), 700VA isolation transformer, which is described in previous blog post and high voltage AC-DC converter. Because of the size and weight of these […]
@mattbrailsford tweeted his DIY bench power supply. You can get one for $14 at Seeed Studio.
Hercules Trapierakis over at Electronics-Lab writes: “This project is a controller for a dual pulse spot welder that has some nice features that are controlled using a LCD interface.” I always wanted a spot welder, so I decided to built one. I wanted to build a capacitance discharge one but I couldnt afford for the capacitors […]
Dilshan Jayakody writes: Now a days 3.3V PSU is essential for microcontroller, programmable logic devices and for some analog components also (especially with some new ADCs). This is ultra-simple 3.3V power supply unit, which is suitable for above mentioned experiments. This power supply is based on, ON semiconductor’s MC33269T-3.3 LDO regulator and it is capable […]
Ian Johnston wrote a post on his blog detailing his bench power supply build: My workshop has a couple of bench power supply’s, one is an old Farnell TOPS 3D 3-rail tracking job, and the other is a 3-rail CSI CSI3005XIII with Constant Current functions. The farnell is all analogue but has no constant current control, it has […]
Kerry writes: In part 1 of this series of blog postings, I showed my preliminary design of a dual tracking linear power supply. In part 2, I showed the completed design and also the finished power supply circuits. And as promised last time, I have made a couple of videos showing the measurements of a […]
Kerry D. Wong writes: In my previous post, I showed my design of a dual tracking ±30V linear power supply. My goal was to use the transformer (28V+28V, center tapped) from an old Deltron W127G open-frame power supply and build a lab supply that can be digitally adjusted in both constant voltage and constant current […]
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 automatic fan controller, digital voltage […]
Kevtris tears down the Tektronix PS2521G power supply. He produced this post detailing his findings.: Weellll, I needed a good bench power supply, so I finally broke down and bought one. I got a Tektronix PS2521G. This doodad has three isolated outputs. This means that each of the three outputs can be wired in series or parallel with […]
Martin uses a dynamo to power his bicycle taillight and wanted to find a way for it to remain lit when the bicycle was not in motion. He sent in this quick hack he used, adding a supercap in the taillight circuit, which powers the light without the need for batteries. Via the contact form.
Giorgos from PCBheaven wrote a post detailing the build of his PICKIT 3 external dual power supply: First of all, why… Why use such a circuit since the PICkit 3 has a built-in power supply software controlled. There are basically two reasons to build this circuit: First of all, it may happen – The internal PSU […]
Alex over at InsideGadgets has written an article detailing the build of his programmable power supply: A small programmable power supply with 4 digit segment display using an ATtiny84 to allow 3 programmable voltages and ability to adjust the voltage higher or lower. Output range is 0.3V to 12.5V.
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 from Monoprice and breaking out […]
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 cycles), but that was too […]
ptyper draws our attention to a deal from TigerDirect which promises to deliver a new HEC 350W Power Supply at no cost after coupon and rebate. The deal says it runs until July 31, 2013. (While the initial advertisement says “free shipping today”, that appears to have expired as we were charged “postage and handling”.) […]
Chris over at the EEVblog forum designed and built this DIY Metcal 13.56 MHz RF supply: A while ago i came up with my own circuit for that, plus some nifty firmware (which basically is optional). You can see what i have done so far on the EEV-Blog forum here As of recently the whole thing is […]