张家港宏峰电器设备有限公司

Full-wave rectifier circuit with a transformer secondary center tap. It is easy to see from the circuit in Figure 2 that it is a combination of two half-wave rectifier circuits, so it is also called a double-half-wave rectifier circuit. The center tap of the transformer is the ground potential, which divides the positive and negative AC voltage into two parts. When the sinusoidal alternating current is positive for half a cycle, the diode DA is turned on and the current passes through the DA to the load, and when the diode DB is turned on for the negative half cycle, the current is also on through the DB to the load. In contrast to a half-wave rectifier circuit, there is a current passing through the load on both the positive and negative half-cycles of the AC voltage. Although the current to the load does not increase at each moment, the average output current is double that of half-wave rectification, and the current flowing through each tube is 1/2 of the load current. The average output voltage at load is 0.9 times the RMS value of the transformer's secondary half winding voltage