Diodes close diodeAn electrical device that allows current to flow in one direction only. are electronic components that can be used to regulate the voltage in circuits and to make logic gates.

Thermal diodes, much like their electrical counterparts, provide unidirectional heat transfer, allowing heat to flow in one ...

Then the diode was known as a "valve," because it forced current in the tube to travel exclusively in one direction. Getting that single directional flow was critical for radio sets which needed ...