Infrared ray receiving circuit

Details Infrared ray receiving circuit Infrared ray receiving circuit

1991-10-09

1993-06-01

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

359189, H01J 4014

Patent

active

052162389

ABSTRACT:
An infrared ray receiving circuit includes a band pass filter including two variable transconductance amplifiers, a detector including a differential switch, and a wave-form shaping circuit including a hysteresis comparator. In the infrared ray receiving circuit, the hysteresis width of the hysteresis comparator can be adjusted, so that generation of hair peaks in the output signal of the hysteresis comparator can be avoided. In addition, the generation of an output signal having a pulse width which is shorter than a prescribed pulse width can be avoided.

REFERENCES:
patent: 4072870 (1978-02-01), Davis
patent: 4085411 (1978-04-01), Genesi
patent: 5155353 (1992-10-01), Pahr

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