Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1987-11-10
1989-02-21
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307290, 307359, 307494, H03K 524, H03K 512
Patent
active
048067911
ABSTRACT:
A differential comparator of the hysteresis type is responsive to a high input difference voltage (V.sub.1 -V.sub.2). The comparator comprises two differential transistors; a hysteresis resistor connected between the emitters of the two transistors; current source means connected to one of the emitters of the two transistors, for determining an emitter current of the two transistors directly and via the hysteresis resistor; and an emitter current controller for controlling the emitter current of the two transistors on the basis of an output current derived from an output terminal. When a voltage difference between the two input terminals reaches a balanced hysteresis voltage value, and therefore no output current flows, the output current is sharply increased in a direction opposite to the preceding direction.
REFERENCES:
patent: 3988595 (1976-10-01), Eatock
patent: 4408132 (1983-10-01), Kuwahara
patent: 4634897 (1987-01-01), Yoshioka
Kabushiki Kaisha Toshiba
Zazworsky John
LandOfFree
Differential comparator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential comparator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential comparator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1524256