TA8164P FM radio ----- TA8164P FM Radio

Keywords: TA8614P, TDA7050T, radio circuit diagram FM receiver circuit described herein is extremely simple, the use of fewer components, can directly drive a speaker, a series of comprehensive performance than the use of the receiving circuit TDA7000 superior manifold. 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. TDA7050 is a low-voltage low-power stereo amplifier, connected to the BTL circuit of the present embodiment, in order to obtain greater power, the work drive the speaker. This circuit can operate in a power supply voltage 1.8 to 6 normal, quiescent current of about 13mA, sensitivity better than 12, SNR is 30dB, the audio output of 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. The elements are small size is preferred. 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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