SCA broadcast receiver circuit diagram

  
This figure is converted into the manifold LM567 SCA broadcast reception information machine schematic. LM567 narrow-band phase-locked loop center to meet the basic role of SCA broadcast demodulation.
SCA broadcast receiver circuit diagram - schematic

R2 LM567 5,6,7 feet between the potentiometer W, C6 determine the IC internal VCO center frequency, the center frequency can be locked trimmer potentiometer W to adjust. Inductance coil B 0.088 enameled high strength available in 10X10 (mm) IF-shaped core transformer 360 laps around the inductance of 3mH, select the resonant capacitor 2200pF ceramic capacitor, W can be used to fine-tune the resistance, no special requirements other components.




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