Principle of rectifier bridge stack

The structure of the rectifier bridge stack was mentioned in the previous draft, one of which is composed of two diodes. So what is the working principle of the rectifier bridge stack, and what is the operating system composed of two diodes?

During each working cycle of the rectifier bridge stack, only two diodes are operating at the same time. Through the unidirectional conduction function of the diodes, AC power is converted into unidirectional DC pulsating voltage. Dissecting the commonly used low-power bridge stack, it can be found that the full wave bridge stack adopts a plastic packaging structure (most low-power bridge stacks use this packaging form).

The four main heating components in the rectifier bridge stack - diodes - are divided into two groups and placed on the copper plates of the DC output pins. There are two connecting copper plates between the DC output pins, which are respectively connected to the input pins (AC input wires), forming a full wave bridge stack with four external connection pins that we see in appearance. Due to the plastic packaging structure used in this series of bridge stacks, epoxy resin is filled around the diodes, pin copper plates, connecting copper plates, and connecting wires as an insulating and thermally conductive skeleton filling material. However, the thermal conductivity of epoxy resin is relatively low (usually 0.35 ℃ W/m, up to 2.5 ℃ W/m), so the junction shell thermal resistance of bridge stacks is generally large (usually 1.0-10 ℃/W).

Have you learned the working principle of rectifier bridge stack? Observe the data parameters of the rectifier bridge stack and analyze the required parameter models for the circuit.