9018 triode composed of wireless microphone circuit diagrams

The transmit frequency is designed in the FM radio band, so that the high frequency signal can be received in conjunction with any FM radio, and the sound signal is reduced from the high frequency signal to complete various purposes. Wireless microphone use: 1. Wireless microphone: Users can sing, speech, or perform any rotation and movement of 360 degrees, and there will be no wire stumbling foot, and legs. 2. Wireless broadcast: The teacher broadcasts on-site broadcasting when lecture, and the number of students can use the radio to collect lectures, which greatly adds the number of people. 3. Wireless is a rayer: When selling goods on the street, use a wireless microphone to sell with a certain novelty, will receive a good advertisement than the ordinary tube. 4, wireless *: With better concealment and security, you can listen to the radio headset in the distance, don't worry about the on-site encounter. 5. Wireless alarm: unattended unattended a certain distance. For example, you can lock sound on the first floor of the second floor *, and the role of the alarm alarm. 6, wireless electronic doorbell: Since the sound can be transmitted wirelessly, the doorbell sound can also be transmitted wirelessly, and the pairing can also be modified into a wireless walkie-talkie. 7, wireless electronic musical instrument: put the harmonica, two Hu, Ji, receive the radio with the radio, or use the power to expand broadcast, you can better appreciate music. 8. Electronic hearing aid: By adjusting the volume of the radio or microphone, enlarge the sound and then send the headset and improve the old man's hearing. 9. Sound control small color light: Change the speaker of the high-power amplifier output into a 6V, 12V car bulb, and adjust the volume of the volume. 10. Reading memory enhancer: and hearing aids are similar, bringing microphone to yourself, listening to your own reading voice to eliminate external interference, and concentrate on focus. 11. Small radio station: Suitable for schools, factories and other units to organize various programs, can play music, news, notices, etc., listen to the radio. 12, TV support repeater: When watching TV, you can listen to the headset can not affect others to sleep, but is controlled by the earphone cable. This device may not be limited.

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