Transistors, the tiny switches that flip on and off inside computer chips, have long been the domain of electricity. But scientists are beginning to develop chip components that run on light. Last ...

The circuit remains on until the finger touch the off contact . This electronic touch switch designed with transistors require a 6 volts power supply circuit . The electronic touch switch circuit ...

You know them, you love them, you take them for granted – they are single push button on/off switches. As [Dino] explains in the most recent episode of his Hack a Week series, they are typica… ...

A very simple but highly efficient combination lock circuit is shown in the figure. Any type of on/off switches can be used, varying from commercially available inexpensive types ...

The transistors at the heart of modern technology work by switching currents of electrons on and off. As electrons flow through circuits, they dissipate heat. Getting rid of this waste heat is a ...

"When the silver atom is removed again, the circuit is interrupted." The world's smallest transistor switches current through the controlled reversible movement of a single atom.

A single electron makes the difference between "on" and "off" for a new transistor made from a single carbon nanotube, whose minute size and low-energy requirements should make it an ideal device ...