The crystal diode is actually a P-N junction, which has unidirectional conductivity and can make the alternating current into direct current. This effect is called rectification.

The unidirectional conductivity is that the diode is turned on by the forward voltage and the diode is not turned on under the reverse voltage. There are many types of rectifier circuits, such as half-wave rectifier circuits and bridge-type full-wave circuits. The half-wave rectification circuit is a rectification method that removes the half cycle and the lower half of the figure.

The half-wave symmetry is exchanged for the rectification effect at the expense of half of the "sacrificial" exchange, and the current utilization rate is very low (calculation shows that the average value of the half-wave voltage obtained by rectification over the entire period, that is, the DC voltage on the load Usc =0.45e2) Therefore, it is often used in high voltage and low current applications, and is rarely used in general radio equipment.

The full-wave rectification circuit can be seen as a combination of two half-wave rectification circuits. In the middle of the secondary winding of the transformer, a tap is drawn to divide the secondary coil into two symmetrical windings, thereby extracting two equal voltages e2a and e2b of opposite polarity to form e2a, D1, Rfz and e2b, D2, Rfz, Two energized circuits. The bridge rectifier circuit is a rectifier circuit that is used more.

It is not difficult to find that the circuit using the ASEMI rectifier bridge, as long as the two diode ports are connected to form a "bridge" structure, has the advantages of a full-wave rectifier circuit, and at the same time overcomes its disadvantages to some extent.

ASEMI brand is focusing on the power rectifier field for 12 years. The enterprise has a research and development team of 170 people and a production workshop of 8500 square meters. 28 advanced Taiwan Jianding test lines ensure that product has entered the strict inspection process, and the factory yield rate is high. The production process is excellent, the quality is good, and the stability is high. Therefore, customers who have used ASEMI brand products are willing to stick to it .