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The controller can be used to control music lamps, music fountains and electric fans to simulate natural wind. Its working mode can be divided into internal sound source control and external sound source control. The external sound source is music or human voice in the natural environment to control the circuit; Internal sound sources include

Classification number: TM923

DOI:CNKI:ISSN: 1005-4669 . 0 . 1998-08-02 1

Text snapshot:

The controller can be used to control music lamps, music fountains and electric fans to simulate natural wind. Its working mode can be divided into internal sound source control and external sound source control. The external sound source is music or human voice in the natural environment to control the circuit; The internal sound source is generated by its own music integrated circuit and controls the circuit. The controller is very convenient and interesting to use. The principle of the controller circuit is shown in the attached figure. The sound signal picked up by HTDI is amplified by an audio amplifier with a gain of 200 times composed of LM386, which triggers the control voltage of the triac. The load voltage connected to both ends of the socket CZ varies with the intensity of the sound signal. The internal sound source consists of a 52o2y music integrated circuit and HTDZ. As long as the power is on, the music integrated circuit can continue to work. K is inside and outside ...