Description Ordering
K2001 SMD Soldering Trainer Kit

SMD Soldering Trainer Kit

K2001

This simple SMD Trainer project is a great way to practice soldering a variety of surface-mount devices.
K2620 Five-Way LCD  Panel Meter Kit

Five-Way LCD Panel Meter Kit

K2620

This simple and cheap device has many uses, but it’s mainly intended to replace multiple panel meters. It can also be used as a small additional text screen for PC, Raspberry Pi or any other computer with USB.
K2920 USB Sensing Mains Power Switch Kit

USB Sensing Mains Power Switch Kit

K2920

(SC January '09) Do you have to manually switch your PC's peripherals on (and later off again) each time you boot your PC? If so, this project will make life a lot easier. It monitors your PC's USB port a
K2930 Opto-Isolated Mains Relay

Opto-Isolated Mains Relay

K2930

If you need to switch mains voltages, say from a micro's out- put or any other low voltage source, you need to isolate them from each other. That&rsquos what this project does - it's easy to build and keeps mains voltages locked away from the controller and you! Virtually any low voltage source will do - from 2.7 to 10V.
K3215 +-15VDC Power Supply Kit

+-15VDC Power Supply Kit

K3215

(SC August '88) This great little design will give you +15V, -15V or +/-15V. Requires 12-0-12 V or 15-0-15 V input (transformer not supplied). M 2854L or M 2855L transformers are suitable. Can be used for e
K3218 Dual Tracking 0-19V Power Supply Kit

Dual Tracking 0-19V Power Supply Kit

K3218

(SC June 2010) This linear bench supply can deliver up to 1.6A from positive & negative outputs with a range of +/-0-19V. It has adjustable current limiting for both outputs and can display the voltage
K3220 Universal Regulator Kit

Universal Regulator Kit

K3220

(EA Aug '97) A flexible circuit that provides preset voltage output of 3, 5, 6, 9 or 12V DC. Suitable for powering a wide range of DC low power circuits, such as running a personal CD/radio from a car cigaret
K4326 Voltmeter LED Expanded Scale Kit

Voltmeter LED Expanded Scale Kit

K4326

(ETI September '80) Brilliant single chip design by ETI. Ten segment display indicates exact voltage in 0.5V increments from 10.5V to 15V.
K6042 240V Mains Soft Starter Kit

240V Mains Soft Starter Kit

K6042

(SC April '12) Are you alarmed by the juicy "splatt" from your mains power point when you plug in something like a large plasma TV set? Do you sometimes burn out light and power point switches because of
K6049 240V Mains Brownout Protector Kit

240V Mains Brownout Protector Kit

K6049

The Brownout Protector is designed to protect single-phase induction motors in fridges, freezers, pumps etc from burnout if they attempt to start during a brownout. It will switch off the power if the voltage falls below a set threshold.
K6340 Mini Switching Regulator

Mini Switching Regulator

K6340

(SC Feb '12) This tiny regulator board outputs 1.2-20V from a higher voltage DC supply at currents up to 1.5A. It's small, efficient and cheap to build, with many handy features such as a very low drop-ou

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