Single-chip microcomputer constant current device for single-phase bridge type semi-controlled electroplating DC power supply-EEWORLD

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【Abstract】 A single-phase bridge type semi-controlled electroplating DC power supply with a single-chip microcomputer constant current device belongs to the application of single-chip microcomputer control technology in a constant current device for electroplating DC power supply. It includes a thyristor voltage control circuit and a single-chip microcomputer control device. It is characterized in that the DC constant current setting key, the clock setting key, and the timing setting key are respectively connected to the single-chip microcomputer input end; the single-chip microcomputer I/O output end is connected to the optocoupler, and the optocoupler is connected to the thyristor control end. The controlled rectifier circuit is composed of two thyristors and two silicon rectifiers. The single-phase power supply is connected to the positive electrode of the thyristor and the negative electrode of the silicon rectifier respectively after the transformer steps down the voltage. The negative end of the thyristor is the positive electrode of the electroplating power supply, and the positive electrode of the silicon rectifier is the negative electrode of the electroplating power supply. The rectified DC current is used for electroplating. The output end of the single-chip microcomputer is connected to a digital display screen. The invention controls the conduction angle of the thyristor connected thereto by setting the constant current value, and realizes the constant current output of the set current, which is widely used in small electroplating power supply equipment.      A single-phase bridge type semi-controlled electroplating DC power supply single-chip constant current device belongs to the application of single-chip control technology in electroplating DC power supply constant current device. It includes a thyristor voltage control circuit and a single-chip control device. It is characterized in that the DC constant current setting key, the clock setting key, and the timing setting key are respectively connected to the single-chip input end; the single-chip I/O output end is connected to the optocoupler, and the optocoupler is connected to the thyristor control end. The controlled rectifier circuit is composed of two thyristors and two silicon rectifiers. The single-phase power supply is connected to the positive electrode of the thyristor and the negative electrode of the silicon rectifier respectively after the voltage is stepped down by the transformer. The negative end of the thyristor is the positive electrode of the electroplating power supply, and the positive electrode of the silicon rectifier is the negative electrode of the electroplating power supply. The rectified DC current is used for electroplating. The output end of the single-chip is connected to a digital display screen. The invention controls the conduction angle of the thyristor connected thereto by setting the constant current value, and realizes the constant current output of the set current, which is widely used in small electroplating power supply equipment.

Reference address：Single-chip microcomputer constant current device for single-phase bridge type semi-controlled electroplating DC power supply

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