ApplicationNo. CN892 167 14.9 Patent Application Date 1989.09. 18 Announcement (Announcement)No. CN2067885 Announcement (Announcement) Date1990./KLOC-0 +05 Inventor (Designer) Jiang Wei, No.37, Building Dashanzi 15, Chaoyang District, Beijing, applied for international announcement of entry date. Liu Shichang, the patent agency of Sanyou Patent Office, concluded that the sound control lamp is a sound control electronic lighting switch device. It provides a sound control lamp with simple operation, practical reliability, strong anti-interference ability and sensitive control. People can turn on the light quickly as long as they hiss 1 second or more with their mouths, and they can turn off the light automatically when there is a delay. The delay time is determined by the length of the hissing sound, and it is also equipped with a manual switch, so it can also be used as an ordinary lighting lamp. The voice control lamp consists of microphone, audio amplifier circuit, frequency selection circuit, voltage doubling rectifier circuit, amplitude discrimination and limiting circuit, time delay closing circuit and silicon controlled rectifier circuit. A sound control lamp is composed of a lamp cap 1, a light bulb 2 and a manual switch 3, and is characterized by further comprising a circuit board 5 installed in the lamp cap 1, and the circuit board 5 is composed of a frequency selection circuit, an amplitude identification and amplitude limiting circuit, a delay opening circuit and a delay closing circuit. B, electret microphone 4 installed on the lamp holder 1 and connected to the circuit board 5.