Patent ID: 6160727
Filing Date: 2000-12-12
Classification: H02J

Abstract:
An automatic power control device comprising:a charge battery (50);a voltage level circuit (10) having an indication lamp (11), a switch (12) connected with said indication lamp (11) in parallel, two resistors R1, R2 respectively connected to an end of said switch (12), and two neon lamps (15, 16) connected to the two resistors R1,R2, so as to turn on one or two neon lamps (15, 16) by turning the switch off or on thereby generating light;a power circuit (40) for providing a power supply;a first and a second photo control circuit (20, 30) for detecting light from said neon lamps (15, 16) to activate said power circuit (40) for selectively supplying power to a load and said charge battery (50), wherein each photo control circuit (20, 30) has a photo resistor (22, 32) for detecting the light, and said first photo control circuit (20) has a first relay (23) to control the power supply of the power circuit (40) and said second photo control circuit (30) has a second relay (33) for determining whether said power circuit (40) or said charge battery (50) supplies power.