BAY71

BAY71 is a type of semiconductor components, a single-phase full-wave rectifier bridge, or affectionately referred to as a full-wave bridge rectifier, rectifying AC to DC. It is widely used in the fields of electric power, communication, instrumentation, etc. It is a commonly used two-way diode with two terminals at both ends, which is divided into two parts: A and K, which correspond to the Anode and Cathode respectively. The bridge rectifier circuit is composed of four diodes connected in a closed loop, with two diodes connected in series to form a branch, using a bridge connection to form two pairs of terminals. The input of the bridge rectifier is an AC signal, and the output is a DC signal.

The principle of BAY71 is simple: because the voltage of the anode and cathode of the diode is forward biased and the current flow is forward, the rectified signal is from the negative half cycle of the AC signal and the positive half cycle of the AC signal entered the bridge, so the anode of both diodes of the bridge is The current of the positive semi-cycle is input, the current of the negative semi-cycle is input to the two diodes of the cathode, so the output of the voltage is the smoothed DC voltage. The advantage of the diode bridge rectifier circuit is that it can achieve full-wave rectification without any additional filtering circuit, and it is suitable for large-power applications.

The application of BAY71 is very wide. The most common application is the rectification and filtering of alternating current in the mains of a home. It is widely used in the fields of electric furnaces, low-voltage transformers, electric bicycles, induction motors, automatic equipment relays, etc., and it can also be used as a pure logic power supply for computer and SSB linear power amplifiers as well as low-power audio amplifiers. The voltage regulator is used in modern communication systems and power supplies, such as cameras, keyboards, cell phones, etc. It is also used in metallurgical machinery, petroleum machinery, medical instrumentation, diagnostic equipment, air-conditioning equipment and microwave ovens.

In summary, the common BAY71 is composed of four independent silicon diodes connected in a closed loop, and the two pairs of terminals provide full-wave rectification. Its application field is extensive, mainly used as rectifying and filtering alternating current equipment, as well as voltage regulating power supply, suitable for mature and computer systems in home and other occasions, as well as all kinds of connecting equipment in the industry.