| Title |
The Protective Countermeasure of Water Purifier PCB according to Abnormal Voltage |
| Authors |
Dong-Ook Kim ; Chung-Seog Choi ; Hyun-Wook Moon ; Ki-Yeon Lee ; Hyang-Kon Kim |
| Keywords |
Abnormal voltage ; Power control system ; Electrical safety ; Insulation blackdown |
| Abstract |
The electrical accident results from an insulation blackdown by over-voltage, an overheating by the excess of allowable current, a deterioration performance by the passage of time, and so on. This paper discusses how to improve the power control system of PCB in water purifier. The protecting device of present power supply control system in water purifier is composed of the varistor device which acts only for impulse-type surges. So the present system can not be protected others except the surge of impulse-type. The newly-suggested power control system in this paper is designed to protect the system by disconnecting power supply through SSR(Solid State Relay) if the value of input voltage is exceeded the setting value. |