What is a quick recovery diode?

The

diode is a common electronic device with two wires; It allows the electrical signal to go in one direction, but blocks the signal that tries to go through the opposite direction. In operation, the diode constantly switches back and forth between performing in the desired direction and blocking the undesirable direction. When the diode switches, it takes a short moment called recovery time, recover and change from blocking. During the recovery time, a small amount of signal may pass in the wrong direction. The quick regeneration diode is designed to have the least recovery time, so that the undesirable signal does not disturb a high -performance or high -frequency device.

Standard semiconductor diodes are made of two pieces of material such as silicon. One piece is positively charged, called anode, and the other is negatively charged, called cathode. Such diodes are called PN Junction diodes after two charged sections and switching, which takes place at the intersection where these two pieces meet.

When the electric current enters the cathode, it cannot pass the negatively charged with a diode that shares the same electric charge and is blocked. However, the current entering anode can pass through a positively charged anode and continue through the cathode and outside the other side of the diode and to the rest of the perimeter. In most applications, for example, when converting the AC signal to a DC, the diode regularly switches between the conductor and the blocking.

At the time of the diode, the current passing through the diode creates a negative charge in a normally positive diode anode. When it switches to blocking mode, this built -up charge allows you to flow through the electric current in the opposite direction until the charge is dispersed. TIME takes this fee for scattering and the diode begins to fully block the signal, is called the recovery time of the diode.

For most applications, the recovery time is not a standard diode, which is usually less than 100 milliseconds long, problem. As wellL, which passes through the diode during the recovery period, is often too weak to worry. However, in some high -speed, high -frequency or high -performance applications, the diode recovery time may be essential and requires the use of a quick recovery diode.

Operationally, a quick regeneration diode usually overcomes a long recovery period of standard diode using a metal segment instead of one of the semiconductor segments, for example in Schottky's diode. Another type of fast regenerative diode, called gold diode, uses to increase the conductivity of one of the segments of gold or platinum ingredients. In practice, the use of metal instead of a semiconductor diode. This higher conductivity allows the charge built in the diode to distract much faster, usually in the range of tens of nanoseconds, which significantly reduces the diode recovery time.