state the specifications of diode used in this lab experience
Answers
A diode is a two-terminal electronic component that conducts current in one direction. It has low resistance in one direction, and high resistance in the other.
A semiconductor diode is the most common type of diode used currently in many laboratory experiments. It 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. Nowadays, most diodes are made of silicon, but other materials such as selenium and germanium are used sometimes.
The most common function of a diode is to allow an electric current to pass in one direction (called the diode's forward direction) while blocking it in the opposite (the reverse). This unidirectional behavior is called rectification, and is used to convert alternating current (AC) to direct current (DC). Forms of rectifiers, diodes can be used for such tasks as extracting modulation from radio signals in radio receivers.
Diodes are used to regulate voltage (Zener diodes), to protect circuits from high voltage surges (avalanche diodes), to electronically tune radio and TV receivers (varactor diodes), to generate radio-frequency oscillations (tunnel diodes, Gunn diodes, IMPATT diodes), and to produce light (light-emitting diodes). Tunnel, Gunn and IMPATT diodes exhibit negative resistance, which is useful in microwave and switching circuits.