rsdio writes: These parts look promising on paper, but the sample circuit has too many parts for an inexpensive implementation. I’m still sure something can be learned by studying the data sheets. MAX5975A, MAX5975B Current-Mode PWM Controllers with Frequency Dithering for EMI-Sensitive Power Supplies: High Efficiency at Light Loads Meets Green Requirements of Next-Generation IP […]
Another article that might help with bench power supply designs: Current-Sense Amplifiers with Digital Output and 60V Common-Mode Range Offers easy interface with microcontrollers (supports 1.8V logic) by using digital outputs Delivers wide 60V common-mode range for robustness under fault conditions Includes internal op amp/comparator that allows flexibility in system design: the internal amplifier can […]
rsdio tipped us to an app note on isolated power-supply circuits: Wow! It’s quite interesting to see how to substitute capacitors for a transformer. Without digging deeper, though, it’s not clear whether voltage boost can be achieved. An integrated H-bridge driver for isolated power-supply circuits (MAX256) usually drives the primary of a transformer, but it […]
This amplifier with an analog voltage multiplier could be useful in a bench power supply: Combining a high-side current-sense amplifier with an analog voltage multiplier, the MAX4211 can easily measure the power dissipated in a load. One multiplier input connects to the load voltage, and the other to an internal analog of the load current—that […]
We’ve been working on a new power supply in the forum, so this programmable power supply project was an interesting read. The PIC adjusts the output voltage using input from a keypad. Via Hack a Day.
The web platform is a tiny server designed for networked hacks where a full PC is inconvenient. This tiny internet appliance can connect to web services, control physical objects from a browser interface, or email sensor status reports. It’s our go-to board for interactive internet art like the @tweet tree Twitter-controlled Christmas tree. Web platform […]
Breadboards are a fast and easy way to prototype a circuit, and just about every hobby electronics biz has a power supply that’s supposed to fit a breadboard. IPenguin compared the designs from Seeed Studio, Adafruit Industries, and SparkFun. What’s features are on your ideal breadboard power supply?
Gerard sent a tip for connecting multiple cables to a bench power supply: Here is a simple hack which will allow you to connect, wrap , group quite a few power cables in parallel… and all you need is a paper clip.