App note: Start-up test using electronic load

An app note from Alpha and Omega Semiconductor on importance of start-up power behavior to diagnose and prevent unwanted inrush current. Link here (PDF) Electronic loads, such as Chroma 6310 series, can be configured as constant current (CC) mode, constant voltage (CV) mode and constant resistance (CR) mode. In CC mode, the load will sink […]

App note: Eliminate noise through proper supply bypass filtering

Power supply filtering, an application note from Maxim Integrated. Link here If sensitive analog systems are run from one supply without the sufficient bypassing to eliminate noise, undesired degradation in a system’s performance will result. This application note provides insight into suitable techniques to overcome this roadblock.

HP Agilent E3611A power supply teardown and calibration

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 teardown and calibration.

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

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 of this kit which I […]

App note: Power-supply solutions for Xilinx FPGAs

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.  

Mini high voltage power supply

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, testing of insulating materials…) this […]

app note: Simple Current-Limiting Power Supply

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 MIC29152 LDO Regulator has a […]

Power bar, a small breadboard power supply

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 at the same time want […]

A digitally controlled dual tracking power supply I

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 […]

App note: PWM Margining with the MAX34451

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 enabling and disabling of PWM, […]