Juwito, Arif F.Muslimin2023-01-092023-01-092016-12-28https://repository.polibatam.ac.id/xmlui/handle/123456789/1364In the era of modern globalization today science and technology is growing rapidly, one of science in the field of power electronics. Many household electronic appliances that use AC current (alternating current) with a large power, but have been controlled by using a microcontroller supplied with DC current (Direct Current) such as fans, was hing machines, lights, air conditioning, other. It is very rare students who do not know the science in the field of power electronics. One example is the application of a three phase phase controlled rectifier. Therefore become the guide of writing trainer as instructional media that serves to control and menyretahkan voltage source PLN 220VAC three phase become DC half wave using SCR as trigger current. This control uses the PWM (pulse width modulation) method with a microcontroller as a pulse width regulator to generate the current supplied to the SCR driver, LED- Phototriac type optocoupler as the driver of the SCR gate, and the LED- phototransistor type optocoupler as the zero crossing circuit On a single wave cycle of a 220VAC voltage source. In the end students can use. Which is directly examined by the author.idTeknik ElektroElektronikaTeknik dan Ilmu yang BerkaitanThesis