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Triple voltage rectifier circuit

Source: InternetPublisher:无人共我 Keywords: Rectifier circuit voltage doubler rectifier BSP diode Updated: 2020/08/31

5. Triple voltage<strong>rectifier circuit</strong>.gif

(1) Circuit structure The triple voltage rectifier circuit consists of a power transformer, 3 diodes , and 3 capacitors. The circuit is shown in Figure 12-5.
    (2) Working principle In the first positive half cycle of the circuit, the diode VDI is turned on, and the current
passes through the diode VD1 to charge the capacitor Cl with the right positive and left negative voltage M. 】, so that "d≈
.ku2. In the negative half cycle of ":, the diode VD2 is forward-biased and conducts, H. and M. 1 are connected in series and
charge C2 with the positive and negative voltage "d" on the right and left, so that u. 2 - ground ten volts, ≈2 f/Uz.
    In the second positive half cycle of the wave, the diode VD1 conducts, and the current continues to pass through the diode
Tube VD1 charges the capacitor Cl, making ""≈, /2u2. At the same time, ut2 turns on VD3, ". .
Charge capacitor C3 through VD3 so that Ud-r.tcz≈2√2 Uz. In this way, after multiple
cycles of charging, three times the ~,§U voltage, that is, U, can be obtained at both ends of the load RL. . +Hd≈3JZUz. Based on the above principles, a voltage doubling rectifier
circuit     can be formed using only a diode and a capacitor . Through analysis, it can be seen that in the voltage doubler rectifier circuit, the maximum reverse voltage endured by each diode is 2 fiUz.     In addition, it must be noted that in a multi-voltage rectifier circuit , the load must be large and the load current must be small. Only in this way can a stable output voltage be achieved. ,





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