The main parameters of bridge rectifier circuit calculation. The bridge rectifier circuit overcomes the shortcomings that the full-wave rectifier circuit requires the transformer secondary to have a center tap and the diode have to withstand large back pressure, but two more diodes are used. With the rapid development of semiconductor devices and low cost today, bridge rectifier circuits are widely used in practice. If you choose improperly, you may not be able to work safely, or even burn the diodes.Ĥ How Bridge Rectifier Converts AC to DC? It needs to be pointed out that the diode as a rectifier component should be selected according to different rectification methods and load requirements.
To simplify, the diode is treated with an ideal model, that is, the forward conduction resistance is zero and the reverse resistance is infinite. The bridge rectifier circuit can also be considered as a kind of full-wave rectifier circuit. The transformer windings are connected to four diodes according to the method above. D1 ~ D4 are four identical rectifier diodes connected in the form of a bridge, so they are called bridge rectifier circuits. Using the guiding function of the diode, the secondary output can be directed to the load even in the negative half cycle.
The specific connection method is shown in the figure. It can be seen from the figure that in the positive half cycle, the current is guided by D1 and D3 to pass through RL from top to bottom, and in the negative half cycle, the current flows by D2 and D4 to pass through RL from top to bottom. #Full bridge rectifier calculator generator#.
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