| 摘要 |
PROBLEM TO BE SOLVED: To enable to control lighting by light control data from the outside using an electronic volume. SOLUTION: The electronic volume 4 changes the variable resistance value based on the light control data by incorporating the light control data from the outside. A level based on a resistor R1 and the variable resistance value is supplied to the control terminal of a power control and signal processing part 1 and the power control and signal processing part 1 generates a DC voltage corresponding to the level of the control terminal. A lamp voltage based on the outputted DC voltage of the power control and signal processing part 1 is generated and the lamp 3 is lighted. This means that the lamp 3 is based on the light control data from the outside, thereby light control by the outside signal is possible without necessitating a complicated light control operation by the user. COPYRIGHT: (C)2006,JPO&NCIPI |
