The infrared receiver circuit

Published:2011/6/3 0:37:00 Author:Seven | Keyword: infrared receiver | From:SeekIC

Because of the integrated amplifier, the circuit in Figure 8.5 is simple and small-sized. It is fixed with a TDA4050 integrated circuit, the weak infrared signal is received by the light dependent diode VD, and the signal is magnified by the NPN firstly. As the condensing (of which the diameter is about 15mm, and the focal length is about 30mm)lens is used here, the effective distance is increased to 20-30 times more than the former. The capacitor C can effectively reduce the low-frequency noise signal in the range of 50-100HZ.



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