Inside there's a coil of wire wrapped around an iron core. When a current flows through this control wire, it creates a magnetic field. This pulls down the metal switch on top, which contacts the ...

Imagine your world without portable computers, GPS, or the internet. Does it make your palms a little sweaty? Would you be ...

A transistor is a tiny but powerful electronic component that acts like a switch or an amplifier. It is made from a semiconductor material, usually silicon, and has three legs for connection to ...

A friend recently sent me an email noting that the classic 2N3904 bipolar transistor was now 60 years old. Since its “birth” was before I got involved with basic electronics, that callout was ...

Wood isn’t usually very good at conducting electricity, but now scientists have created the first functional wooden transistor. It’s not the best, and it requires some processing, but it does work and ...

CAMBRIDGE, MA – Silicon transistors, which are used to amplify and switch signals, are a critical component in most electronic devices, from smartphones to automobiles. But silicon semiconductor ...

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Transistors, the building blocks of modern electronics, are typically made of silicon. Because it's a semiconductor, this material can control the flow of electricity in a circuit. But silicon has ...

Physical concepts -- Characteristics, parameters, equivalent circuits -- Basic amplifier configurations -- Direct-current bias circuits -- Low-frequency amplifiers -- Power amplifiers -- High ...

Inside every electronic device, the flow of electricity is controlled by a switch called a transistor. For decades, these switches were made from silicon. More recently, engineers have turned to a ...