You can see the difference between rectifier bridge and bridge pile.

You can see the difference between rectifier bridge and bridge pile.
What is a rectifier bridge.
The rectifier bridge is to seal the rectifier diodee in a shell, which is divided into full bridge and half bridge. The full bridge is to seal together the four diodes of the connected bridge rectifier circuit. Half-bridge is to seal half of two diode bridge rectifiers together, two half-bridges can be used to form a bridge rectifier circuit, and one half-bridge can also form a transformer full-wave rectifier circuit with central tap. The rectifier circuit and working voltage should be considered in choosing the rectifier bridge.
Use of rectifier bridge.
As a kind of power component, rectifier bridge is very extensive. It is applied to all kinds of power equipment.
Working principle of rectifier bridge.
The interior of the rectifier bridge is mainly composed of four diodes to convert the input AC voltage into the output DC voltage.
In each working cycle of the rectifier bridge, only two diodes work at the same time, and the alternating current is converted into a unidirectional DC pulsating voltage through the unidirectional conduction function of the diode. After dissecting the commonly used low-power rectifier bridge (such as the RS2501M of RECTRON SEMICONDUCTOR), it is found that the internal structure of the full-wave rectifier bridge is shown in figure 2, and the full-wave rectifier bridge adopts a plastic package structure (most of the low-power rectifier bridges adopt this package form). The diodes, the four main heating components in the bridge, are divided into two groups and placed on the copper pins of the DC output. Between the copper plates of the DC output pins, there are two connecting copper plates, which are respectively connected to the input pins (AC input wires) to form a full-wave rectifier bridge with four external connecting pins. Because this series of rectifier bridges are all made of plastic packaging structure, the diodes, pin copper plates, connecting copper plates and connecting wires are filled with epoxy resin, which is used as a skeleton filling material for insulation and heat conduction. However, the thermal conductivity of epoxy resin is relatively low (generally 0.35 ℃ WANGA, the highest is 2.5 ℃ WAGO), so the junction-shell thermal resistance of the rectifier bridge is generally relatively large (usually 1.010 ℃ / W). Usually, in the relevant parameter table of the component, the manufacturer will provide the junction-environment thermal resistance (Rja) of the device in the case of natural cooling and the junction-shell thermal resistance (Rjc) through which the device is cooled by a radiator.
Naming rules of rectifier bridge.
In the general naming of rectifier bridge, there are three digits, the first number represents the rated current, A, and the last two digits represent the rated voltage (number * 100), V.
For example, KBL410 is 4A _ 1000V. RS507 is 5A, which means 1000V. (1234567 represents the voltage range of 50V, 100V, 100V, 200V, 400V, 600V, 800V, 1000V.) the commonly used domestic full-bridge has Youfeng YF series, and the imported full-bridge has ST, IR and so on.
There are many ways to convert alternating current to direct current with rectifier diodes, including half-wave rectifier, full-wave rectifier and bridge rectifier. The rectifier bridge is to encapsulate the four diodes of the bridge rectifier together, leading to only four pins. Of the four pins, two DC outputs are marked with + or -, and two AC inputs are marked with ~.
Application Field of Rectifier Bridge.
Rectifier bridge stack can be used in all areas where voltage is needed for rectification:
1. Electroplating electrolysis needs DC, so it is necessary to rectify AC to DC.
2. DC motor also needs to rectify AC to DC.
3. HVDC static electricity needs to rectify AC to DC.
4. The inverter power supply of variable frequency motor is DC, and it is necessary to rectify AC to DC.
5. Battery charging also needs to rectify AC to DC.
What is the bridge pile?
Bridge stack is a kind of electronic component, which is composed of multiple diodes. The main function is to rectify and adjust the direction of current. It is better to use bridge reactor rectifier, first of all, it is very convenient, and its four internal pipes are generally selected and matched, so its performance is relatively close, and when there is high-power rectifier, heat dissipation blocks can be installed on the bridge pile to make the performance more stable when working. Of course, different bridge reactors should be selected for different occasions, and we can not only look at whether the voltage resistance is enough, such as high-frequency characteristics, and so on.
Structure of bridge pile.
It is made of four rectifier silicon chips as bridge connection and externally encapsulated with insulating material. High-power rectifier bridge is encapsulated with zinc metal shell outside the insulating layer to enhance heat dissipation performance.
The principle of bridge pile.
As a kind of power component, bridge reactor is very extensive. It is applied to all kinds of power equipment. Its interior is mainly composed of four diodes to convert the input AC voltage into the output DC voltage.
In each working cycle of the bridge stack, only two diodes work at the same time, and the alternating current is converted into a unidirectional DC pulsating voltage through the unidirectional conduction function of the diode. After dissecting the commonly used low-power bridge stack, it is found that the full-wave bridge stack adopts plastic package structure (most of the low-power bridge stack adopts this package form). The diodes, the four main heating components in the bridge, are divided into two groups and placed on the copper pins of the DC output. There are two connecting copper plates between the DC output pins, which are respectively connected to the input pins (AC input wires) to form a full-wave bridge stack with four external connecting pins that we see in appearance. As the series of bridge stacks are made of plastic packaging structure, the diodes, pin copper plates, connecting copper plates and connecting wires are filled with epoxy resin, which is used as a skeleton filling material for insulation and heat conduction. However, the thermal conductivity of epoxy resin is relatively low (generally 0.35 ℃ WANGA, the highest is 2.5 ℃ WAGO), so the junction-shell thermal resistance of the bridge reactor is generally relatively large (usually 1.010 ℃ / W).
Specification naming of bridge stack.
The forward currents of the whole bridge are 0.5A, 1A, 1.5A, 2A, 2.5A, 3A, 5A, 10A, 20A, 35A, 50A and so on. The withstand voltage (maximum reverse voltage) is 25V, 50V, 100V, 200V, 300V, 400V, 500V, 600V, 800V, 100.