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traditional PWM control full-bridge circuit

2016-05-18 23:48  
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traditional PWM control full-bridge circuit
Figure shows a traditional PWM control full-bridge circuit and waveforms of control signal. As for 4 switches in the circuit,VF1 and VF4 will conduct meanwhile(positive output), and VF2 and VF3 will conduct meanwhile(negative output). Change the conduction and close time of switch tube as well as duty ration to control the output voltage.