Build a Scrolling Message Display Circuit Moving message display units consist of very complicated circuitry and are impossible to build without using microcontroller ICs. However, a small scrolling message display carrying a very few number of characters can be built using ordinary digital ICs.
A Practical Introduction to Transistors Basically the function of a transistor is to amplify a small 'base/emitter' voltage into a much larger 'collector/emitter' voltage. A simple experiment will explain how does a transistor work.
2N3055 Transistor Datasheet Explored Almost 90 % of all medium power electronic gadgets incorporate 2N3055 transistors in their output stages – probably enough to prove the high versatility of the device. The article provides you with all the necessary details about this important electronic active component.
DIY: How to Build a Hand Crank Flashlight A hand operated flashlight does not need input from sources like wind or sun in order to generate electricity. Just pressing a spring-gear mechanism is enough to make the device “pump” electricity that can be used for activating an output load.
Generating Electricity from a Bicycle Dynamo The proposed mini-electricity generator project is very simple to build and can be used by students as a school project, or just for hobbyists. The set up can be used to charge a battery with electricity produced from wind power.
Making a Homemade Power Amplifier - PCB Layout Included With monolithic linear ICs becoming commonly available, making monster power audio equipment at home has today become a child’s play. One such device STK4221 from SANYO can be simply used for different massive power audio amplifier applications. One sample circuit is discussed herein.