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Keysight Technologies Understanding RF/Microwave Solid State
Keysight Technologies Understanding RF/Microwave Solid State

Keysight 423B, 8470B, 8472B, 8473B/C Low Barrier Schottky Diode
Keysight 423B, 8470B, 8472B, 8473B/C Low Barrier Schottky Diode

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MHW1304LC 5-75 MHz, 30.8 dB CATV Low Current Amplifier
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MHW1254LC 5-75 MHz, 25.5 dB CATV Low Current Amplifier
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External Cavity Diode Laser Controller
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Diode



In electronics, a diode is a two-terminal electronic component that conducts primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance to the flow of current in one direction, and high (ideally infinite) resistance in the other. A semiconductor diode, the most common type today, is a crystalline piece of semiconductor material with a p–n junction connected to two electrical terminals. A vacuum tube diode has two electrodes, a plate (anode) and a heated cathode. Semiconductor diodes were the first semiconductor electronic devices. The discovery of crystals' rectifying abilities was made by German physicist Ferdinand Braun in 1874. The first semiconductor diodes, called cat's whisker diodes, developed around 1906, were made of mineral crystals such as galena. Today, most diodes are made of silicon, but other semiconductors such as selenium or germanium are sometimes used.
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