RANCANG BANGUN OTOMASI SISTEM PENGONTROLAN INTENSITAS PENERANGAN LAMPU PIJAR MENGGUNAKAN PENGATURAN FASA SILICON CONTROLLED RECTIFIER (SCR)

Abstract

Control voltage system project and realization with phase detector circuit to control lamp light intensity has been done. This tool can be used in instrumentation and electronic (built for smart house), in healt (to cure discase with physiotherapy), microorganism extermination and etc. This system consist of hardware and software. The hardware consist of LDR circuit and signal conditioned, ADC 0804 circuit, microcontroller AT89S51 circuit and DAC 0808, phase detector with IC TCA 785 circuit, SCR circuit and also LCD display. The software use assembly Reads 51 programming. The work system from this tool is light cencor (LDR) will detect much or few of light that will be received at censor surface, received data by censor will be charge into digital using ADC circuit so it can be processed by microcontroller. On DAC circuit, data changed into analog form before sent to phase detector circuit. Phase detector circuit’s input is analog voltage in volt, while the output from detector phase circuit is wave phase that used to trigger SCR gate, so that SCR can be function as voltage control on lamp lightness. The result or value from light control will be displayed into LCD. This research produce a ware that control much or few light lamp intensity value on room according to light intensity level can be received by censor. Smaller intensity that fall into censor. SCR phase triggered with smaller angel so the lamp will flame brighter.