The simplest FM receiver ----- Simple FM Receiver

The simplest FM receiver, SIMPLE FM RECEIVER Keywords: FM radio mechanism, simple FM radio mechanism, TA8164 radio circuit The FM receiver circuit introduced in this site is extremely simple, the components used are less, and the speakers can be directly driven, and the comprehensive performance is superior to the receiving circuit of the TDA7000 series integrated block. The main device is a frequency modulated dedicated integrated circuit TA8164P and a small power stereo power discharge circuit TDA7050. The TA8164P includes functions such as high amplifier, mixing, local oscillator, medium amplification and verification. In addition, it also has a modulation reception function, and the circuit is not used. The high-frequency signal received by the antenna enters the first foot of TA8164P. After processing, the audio signal is output from the 11th pin, and then the power is transmitted to the TDA 7050. The TDA7050 is a low-voltage small power stereo amplifier. This circuit is connected to a BTL method to obtain a large power, drive the speaker work. The power supply voltage of this circuit can work normally in 1.8-6, and the static current is about 13mA, the sensitivity is better than 12, the signal to noise ratio is 30dB, and the audio output power is 100mW. L1, L2 is formed by a 5 mm drill line with a 0.6 mm enameled wire, and the tuning capacitor is tuned by a double variable capacitor for 3 / 15pf. Each element is better than a small number. The color standard of the ceramic filter and the ceramic synculator is the same, with a 1m rod antenna. After the production is completed, the turns between L1, L2, while adjusting the variable capacitance, allowing the circuit to cover all FM stations.

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