Wireless microphone circuit diagram consisting of transistors 9018
Posted on Dec 11, 2010 8904
Under: Microphone Circuits
FM radio transmission frequency band design, it can be used with any FM radio receiver to the high-frequency signal and restores the high frequency signal from the audio signal
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, thereby completing a variety of purposes. Wireless microphone uses: 1, the wireless microphone: User singing, free to rotate 360 degrees and move, there will be no wires or stumbling while speaking performances, Che Houtui. 2, radio: teacher lectures broadcast live, countless students can receive a radio call lectures, greatly increased the number of lectures. 3, selling radio control: when to sell goods on the street, selling wireless microphone with a certain novelty, will receive more than ordinary microphone good advertising effect. 4 Wireless *: a good concealment and security, with headphones to listen to the radio in the distance, and do not worry about embarrassing scene meet. 5, wireless alarm: unattended certain distance. For example, on the second floor * door on the first floor of the sound effects from the anti-theft alarm. 6, wireless electronic doorbell: Because radio propagation may sound, it can also be spread wireless doorbell sounds, pairing can also be converted into walkie-talkies. 7, wireless electronic musical instruments: the harmonica, erhu, guitar and other instruments sound with radio receiver or amplifier with expanded broadcast can better enjoy music. 8, an electronic hearing aid: by adjusting the volume of the radio or microphone, and then into the headset will sound amplification, can effectively improve the elderly hearing. 9, small voice lights: the output of the power amplifier connected to a speaker change wattage equivalent 6V, 12V car light bulb, adjust the volume together made position. 10, reading memory enhancer: hearing aids and similar to the microphone at yourself, listen to your own voice reading to exclude outside interference, from the focus effect. 11, small radio stations: for schools, factories and other units organized various programs on their own, you can play music, news, notifications, etc., used to listen to the radio. 12, television sound transponders: listening with the headphones while watching TV may not affect others sleep, but by the length control headphone cable. This means you can not have this limitation.