The infrared emitting circuit

Published:2011/6/10 3:40:00 Author:Seven | Keyword: infrared emitting circuit | From:SeekIC

In Figure 8.7 is the sound infrared emitting circuit, which is used in wireless electric modulating station selectors, high-fidelity amplifiers and recorders, as the high sensitive sound equipment. The circuit is fixed with OTA as the modulating component. In the circuit, lower-frequency signal UE is delivered to the input point by capacitor of C1, and it is magnified to 2 times. By the potentiometer RP, the control current of OTA1 can be changed in a wide range, so that the magnifying parameter and modulation degree can be changed. The modulation signal is added to OTA2 by C6.



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