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MCM Electronics Daily Deal and Bulk Bargain

DIY Mini Tesla Coil

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."

Induction Introduction

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."

PSU Burner

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."

2×4 H-Bridge

Posted March 1, 2017 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."

1WAMP Open Hardware Guitar Amplifier

Posted April 12, 2016 by Chris

"1Wamp is a one Watt small guitar amplifier based on a JFET guitar pre-amp, the Big Muff Pi tone control and the LM386 power amplifier. This portable amp is an open hardware project designed by ElectroSmash using only free and open-source tools."

Real vs. Fake Audiophile Op-Amps: OPA627

Posted March 25, 2016 by Chris

"Walking around ebay I noticed insanely cheap OPA627’s. It’s rather old, popular and high-quality opamps, often used in audiophile gear. Manufacturer (Texas Instruments / Burr Brown) sells them 16-80$ each while on ebay it’s cost was 2.7$, shipping included. Obviously, something fishy was going on. I ordered one, and for comparison – older one in metal can package, apparently desoldered from some equipment. Let’s see if there is any difference."

Building a Custom Integrated Circuit Package

Posted March 17, 2016 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."

Tiny Mic Pre-Amplifier

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."

A Look At Power Line Communication

Posted January 25, 2016 by Chris

"PLC (Power Line Communication) is the technology that allows data transmission over the existing Power Line network. Power Line can be the home power network or the national electricity transmission grid. The data that can be transferred is as diverse as its speed. With speeds of nearly 200Mbps, video transmission, voice, data and any other services can be transmitted successfully."

Precision programmable current source uses two ICs

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."