Laptop Bench Power Supply with FAN controller
Power supply

Laptop Bench Power Supply with FAN controller

Zak Kemble build another great project. This time it's a bench power supply with a laptop brick input. The power supply needed sufficient cooling so he added a small Fan and a controller a the edge of the board. He writes: Many years ago (September 2009) I made a simple bench power...

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3.3V/3A, Wide-Input, Synchronous, Step-Down DC-DC Reference Design
Power supply

3.3V/3A, Wide-Input, Synchronous, Step-Down DC-DC Reference Design

The MAXREFDES1048 synchronous step-down dc-dc converter reference design from Maxim Integrated Products is based on the MAX17504, a high-efficiency, high-voltage, synchronously rectified step-down converter with dual integrated MOSFETs can operate over a 4.5V to 60V input. The...

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Oscilloscope Differential Probe USB Power Supply
Power supply

Oscilloscope Differential Probe USB Power Supply

By Dr. Martin Oppermann (Germany) & www.elektormagazine.com In his article published in the July & August 2016 issue, Elektor author Alfred Rosenkränzer presented a wonderfully simple differential probe for oscilloscopes, based around the AD8479 precision differential...

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Zero Multi-Power Supply is Battery supported
Power supply

Zero Multi-Power Supply is Battery supported

This is a breadboard friendly power supply with multiple input options. It can be powered from a USB port or from attached AAA batteries. It also supports Lithium battery input, Single cell(3.7V) and Dual Cell (7.4V,Max:9V) all supported. Output is 2 way adjustable (2-Way Adjustable...

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Open frame non-isolated DC-DC converter is only 3.50mm thick
Power supply

Open frame non-isolated DC-DC converter is only 3.50mm thick

Designed for applications requiring non-isolated step-down circuits, Mornsun’s K78-JT-500R3 Series of open frame non-isolated DC-DC converters is only 3.50mm thick, with an SMD package footprint of 12.50x13.50mm. The new series provides an ultra-wide input voltage range of 4.75 to...

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USB to -5V Negative Voltage DC-DC switching Converter
Power supply

USB to -5V Negative Voltage DC-DC switching Converter

Now days USB power source is very common and available in many devices and power banks. This DC-DC converter provide -5V negative voltage from +5V USB power source. This converter can be used in a wide range of industrial automation control equipment, sensors, isolated operational...

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Smart algorithm triples service life of power supplies
Power supply

Smart algorithm triples service life of power supplies

New modulation method increases operational lifetime of switching power units through digital, highly dynamic control and the use of film capacitors. Switching power units are used for the power supply of many electrical devices, e.g. computers, LED lights or laser welding equipment....

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OPEN Power: A Simple Constant Power Supply with Variable Voltage
Power supply

OPEN Power: A Simple Constant Power Supply with Variable Voltage

John Loeffler didn't have much to build a power supply for his bench so he decided to build his own and he did it nicely. This Project is to produce 3 final Prototypes. All Power Supplies will have USB Charging of Lithium Batteries and a Load Sharing. Prototype 1: Simple Constant...

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