upc1651 FM wireless microphone circuit diagram
Source: InternetPublisher:super_star Keywords: Circuit diagram FM wireless UPC wireless microphone Updated: 2021/05/25
The circuit is as shown in the figure. This circuit uses the upc1651 integrated circuit produced by Japan's NEC Company as the main component. The circuit has high gain and stable operation, thus ensuring the high performance of the microphone. Use it to form an FM transmitting circuit. It uses a 40--50cm soft drag line as an antenna, and the effective transmitting distance is greater than 30M. Carefully adjusting the L spacing and fine-tuning capacitor can make the transmitting frequency coverage range 88--108MHZ. The diameter of L in the picture is The 0.51mm enameled wire is wound around a 4mm diameter cylinder 5 times.
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