Can type FM radio circuit diagram
Source: InternetPublisher:fish001 Keywords: Radio circuit machine circuit diagram FM radio Updated: 2021/08/05
The radio not only has good listening effect, but can also be used as a decoration around the neck. The machine is powered by two AA batteries. When the voltage is as low as 1.8V, the radio effect is still very good. In the figure, L1 and C5 are used to select the radio station. The high-frequency signal is sent into the circuit (pin 12) by the earphone lead that also serves as the antenna. The audio signal output from pin 14 is amplified by V1 and V2 for low frequency and then drives the earphone. L1 uses 0.6mm enameled wire to wind 6 turns around the frame of 3, and then takes off the frame to make a bodiless coil. C1 uses a small single-connected variable capacitor, and the rest use small ceramic capacitors. V1 and V2 use imported pipe K9014.
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