SR109 B0G

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Introduction

The SR109 B0G series is a single-phase, controlled rectifier module developed by Rectron. It is housed in a hermetically sealed package, is dry-wiped and insulated, and is widely used in various power supplies and energy conversion applications. This series of rectifiers is widely used in the field of communication power equipment, solar energy photovoltaic systems, motor speed control and so on.

Working Principle

The working principle of SR109 B0G module is the general PNPN structure of thyristors and rectifiers. This series of rectifiers are semi-controlled rectifiers, so the current does not update quickly and the switching speed is slower. The turn on voltage of the module is about 1.4V and the turn off voltage is about 0.83V.

The utility of the SR109 B0G is determined by the working and function parameters of its components. The working state of the device can be divided into four conditions: 1) Off state; 2) Forward blocking state; 3) Forward conduction state; 4) Reverse bias blocking state. When the anode and cathode potentials exceed the corresponding breakdown potential, it can enter the on-state, that is, the forward conduction state, and then a large current flows through the device to achieve a synchronous rectification effect.

Applications

The SR109 B0G series is suitable for AC-DC and DC-DC energy conversion applications, including DC-AC power conversion, motor speed control, motor control, lighting and other fields. In solar energy photovoltaic systems, the SR109 B0G series rectifier can be used as a solar cell system rectifier, to convert alternating AC power into DC voltage reliably and efficiently.

Speed control of motors is one of the most widespread applications of rectifiers. The solar-powered DC motor speed controller can also adopt the SR109 B0G series module. The module can efficiently regulate the current from the photovoltaic cells to the motor, providing the analogue or pulse-width modulation (PWM) speed control. In addition, the SR109 B0G series can also be used for lighting systems, to provide more efficient and accurate control over the flow of power.

Safety Features

The SR109 B0G series has a unique two-in-one sharing solution to reduce the leakage current generated in the bridge-controlled rectifiers. The two-in-one sharing system helps reduce the power dissipation of the module and improves the reliability of electric system operations. Furthermore, the module also has a built-in over-temperature protection circuit and a temperature alarm output option.

In addition, the series also has an anti-arc protection circuit, which is particularly important in electric welding power structures. When an arc is generated between metal electrodes, the current will be rapidly increased, the arc extinguishing device of the SR109 B0G series module can automatically detect the arc voltage and cut off its own circuit rapidly, thus greatly improve the safety of the welding power.

Conclusion

The SR109 B0G controlled rectifier module is a high-quality and reliable single-phase rectifier module. It is incorporated with advanced technology, anti-arc protection and temperature alarm to ensure its reliable and stable operations. The module is applied in various adjustable-speed motor control, power conversion and lighting applications, as well as in solar energy photovoltaic systems.

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