Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1989-10-13
1992-05-26
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
250214R, G02B 2700
Patent
active
051171180
ABSTRACT:
A photoelectric switch is adapted for us as either a transmission type or a reflection type switch. To provide an integrated circuit for the photoelectric switch and to minimize input/output pins, multiple functions are assigned to each input/output pin. Such functions are provided via first to fourth integrated circuit input/output pins, i.e., the first pin serves functions in the supply of a detection output and a self-diagnosing output; the second pin supports a circuit for driving a projection type LED and a circuit for turning the LED off; the third pin supports a circuit for reversing a stable indication output and an operation indicating output; and the fourth pin supports a circuit for amplifying a received photo-signal and for controlling the mode of combination of photoelectric signals from a pair of photo-diodes. The photoelectric switch includes a support circuit external of the integrated circuit for supporting the various functions provided via the first to fourth pins and two additional pins used in providing operating power.
REFERENCES:
patent: 4912521 (1990-03-01), Almquist et al.
Astex Co., Ltd.
Nelms David C.
Takenaka Electronic Industrial Co., Ltd.
LandOfFree
Photoelectric switch using an integrated circuit with reduced in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photoelectric switch using an integrated circuit with reduced in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoelectric switch using an integrated circuit with reduced in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-422055