A microcontroller based bench DC power supply unit
hardware version 3.0

Double sided main board + board for key pad

This is a kit to build a small but very advanced bench top power supply with current and voltage regulation. For more details see the article "A digital DC power supply, hardware version 3.0"

This kit includes:

Documentation: pinout description of the components, circuit diagram, assembly instructions
Two professionally printed circuit boards (epoxy board): the main board (61x75.5 mm, 2.4x2.97 inch) and one pcb for the key-pad (27x46 mm, 1.06x1.81 inch). The boards are gold plated.
Mechanical parts: 2 x mounting screws and Insulation-pad for transistors
Capacitors: 1 x 470μF, 3 x 0.1μF, 1 x 10nF, 2x 10uF
1 x 5 pin ISP connector
Diodes: 1 x 1N5400, 1 x 1N4004
Transistors: 1 x BD245B, 1 x BD137, 1 x BC547, 1 x BC557
Resistors: 6 x 4K9, 11 x 10K, 1 x 5K6, 2 x 1.5 Ohm 3W, 1 x 820 Ohm, 1 x 100 Ohm, 1 x 470 Ohm, 6 x 1K, 1 x 68K
5 x mini push button
1 x 7805 regulator

Note: You will also need a tuxgraphics 16x2 LCD display, one atmega8a microcontroller and a transformer with rectifier+capacitor (see chapter "Power sources" for details). It is as well possible to use a bigger LCD display as long as it is HD44780 compatible.

Optional add-on: DDCP to USB connect, a USB command interface to remote control the power supply from any PC or Mac.

price: 24.00EUR, [convert_currency]

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A microcontroller based bench DC power supply unithardware version 3.0

A microcontroller based bench DC power supply unit
hardware version 3.0