Posted January 17, 2020 by Chris

“The aim of this pictorial guide is to build a complementary IC package to the Vishay IR receiver. It incorporates the same pitch and pin out except for the ‘Output(1)’ which will now become the new input.”

Posted April 27, 2018 by Chris

"This document will detail my attempt at designing and building a complete theremin…..The project should be a valuable educational experience for anyone undertaking basic RF electronics."

Posted February 18, 2018 by Chris

"In this mini tutorial we introduce a quick and cheap way to make your own Nixie Tube sockets to use them on your next Nixie project. A socket enables you to change a damaged Nixie Tube quickly and with minimum effort."

Posted February 1, 2018 by Chris

"This motor-driver is an H-bridge circuit that was designed to drive a single DC motor at up to 30amps at 24vdc. It incorporates a simple design utilizing parallel mosfets to allow a higher amperage rating and requires 4 wires to control each bridge, 2 digital and 2 PWM capable."

Posted July 23, 2017 by Chris

"How to make a mini Tesla coil ! In today’s video I’ll show you a great idea, a long awaited video about how to make a Tesla coil at the minimal expenses. It’s very easily to make a Tesla coil at home."

Posted April 24, 2017 by Chris

"The induction receiver shown below is very sensitive and can serve a variety of purposes. It is excellent for tracing wiring behind walls, receiving audio from an induction transmitter, hearing lightning and other electric discharges, and monitoring a telephone or other device that produces an audio magnetic field."

Posted March 10, 2017 by Chris

"What does one do when designing a power supply? Well, build a power supply tester, of course. One of the simplest things to build is a constant current load. This will allow for testing of the endurance of the power supply, as most of the designs out there are using slow components."

Posted February 13, 2016 by Chris

"The Tiny Mic Preamplifier based is based on a single transistor amplifier design. It amplifies the output of the electret condenser microphone. Good choice for Karaoke."

Posted January 23, 2016 by Chris

"Dan suggested building a robot that would flush the toilet at timed intervals throughout the day. In my mind, calling something a ‘robot’ sounds like a sophisticated, possibly sentient being that can do your bidding. But simply put, a robot is a machine that can be programmed to do tasks, like flushing a toilet. An automatic kitty toilet flusher sounded perfect!"

Posted January 19, 2016 by Chris

"This Design Idea mates a precision current source IC with precision difference amp chips to create a programmable current source or sink."