| 摘要 |
PURPOSE:To enable a dimmer operation to use a small number of parts by generating a phase control signal with a soft counter and zero cross point detection means, composing the titled device with a microcomputer as the central part and using a phase control circuit. CONSTITUTION:A dimmer device 10 has a thyristor 2, contact 3, and buzzer 4 with a microcomputer 1 as the central part. A power source circuit 20 is formed with a rectifier 21 fullwave rectifying AC power source inputted from a plug 22, resistance R1, and Zener diode ZD. The thyristor 2 controls current supplied to an incandescent lamp 30 by a control signal S1 of the computer 1. The contact 3 functions as a touch switch with computer 1. This constitution enables a broad range dimmer operation to be made with a small number of parts with a phase control signal generated by a soft counter and zero cross point detection means using a phase control circuit. |
