SK315TR

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Diodes - Rectifiers - Single

SK315TR are a type of diodes-rectifiers, also known as single-phase bridge rectifiers, which allow unidirectional current flow through them. Unlike their alternative, the dual-phase bridge rectifiers, the single-phase bridge rectifiers only contain two diodes connected in series, thus requiring substantially less components.

Application Field:

As mentioned before, the SK315TR are quite commonly used in rectification applications. The rectification can be used to convert both AC and DC signals into usable form, as the single-phase bridge rectifiers only allow unidirectional current flow. Their comparatively small size and simple construction allow them to be used in confined spaces or where high power or variables-voltage requirements are necessary.

SK315TR applications include, but are not limited to, power supplies and inverters, solar cells, ECG, IC testing and programming circuits, AV systems, telecommunication and industrial equipment.

Working Principle:

The SK315TR’s function as a diode-bridge rectifier is determined by how the diodes are arranged in the bridge. According to their internal arrangement’s conduction characteristics and the waveform of the input voltage, the bridge is able to conduct current in one direction only.

The electrical conduction of the bridge rectifier is based on the process of rectification, where the two diodes and their two antiparallel connections enable the unidirectional current flow. By the process of rectification, the alternating current from the source is converted into direct current.

The waveform of the input voltage is usually alternating, but with some peaks and lower points. When the voltage reaches the positive peak and goes into the positive half cycle, the diodes connected together work, passing the electric current through them, allowing the semicircular negative voltage to be crossed to reach the negative half cycle.

The electric current conducts through the negative half cycle in the same manner as it did in the positive cycle, thus allowing the conduction of current in only one direction.

This design ensures that the electric charges can only travel through the circuit in one direction. This type of rectification also enables voltage control, so that the output voltage equals the input voltage, as the two directions cancel each other out.

Aside from the SK315TR diode-bridge rectifiers’ key function, the circulating current can be decreased by the addition of a capacitor after the rectification. This should be done in order to reduce the peak currents and switching losses which may otherwise be caused by the uncontrolled rectification.

Conclusion:

SK315TR single-phase bridge rectifiers are an ideal choice for rectification applications due to their small size and simple construction. As mentioned before, they are commonly used in power supplies and inverters, solar cells, ECG, IC testing and programming circuits, AV systems, telecommunication and industrial equipment.

Studying their conduction characteristics and waveform of the input voltage, one can understand that the rectification process occurs as the charges can only travel through the circuit in one direction. Moreover, adding a capacitor after the rectification can help reduce the switching losses caused by uncontrolled rectification.

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