The degree thesis is a voltage converter circuit design of DC voltage to AC voltage, which uses a three-phase Inverter circuit using a Sinusoidal signal generation is controlled by Pulse Width Modulation (SPWM) that will drive the circuit SPWM signal ket with IR2111 to get the right side Low side and High signal to drive the switches using a Bipolar Switch Switching the Steering makes steering switches-pressure value. with both the positive (+) and negative (-), which is the voltage at the output of the Inverter circuit with wongchonkrong low frequency (Low pass Filter) so that the voltage is 220 volts at a frequency of wave science 50 Hz to power to a load.
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