Hybrid contactor for DC airframe power supply

Details Hybrid contactor for DC airframe power supply Hybrid contactor for DC airframe power supply

1989-11-14

1991-02-12

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 8, 361 13, H02H 3087

Patent

active

049929046

ABSTRACT:
A contactor (12) for controlling connection of a DC power supply to an electrical load (14) in includes a series circuit (19) disposed between a nonground DC potential and a load having first (20) and second (22) relays each having a pair of contacts (26), the first relay and the second relay having a conducting state when the pair of contacts are closed and a non-conducting state when the pair of contacts are open which control current flow between the DC power supply and the load with the states being controlled by control signals applied to the relays; a semiconductor switch (24) having a conductive state controlled by a control signal to turn on the semiconductor switch to connect the semiconductor switch in parallel with the contacts of the first relay and a non-conductive state controlled by a control signal to turn off the semiconductor switch to disconnect the terminals of the semiconductor switch; a fault sensor (50) coupled to the load for generating a signal in response to the load drawing current exceeding a threshold to cause the second relay to open to disconnect the load from the power supply; and a control signal generator (28) for generating the control signals of the switches.

REFERENCES:
patent: 4420784 (1983-12-01), Chen et al.
patent: 4438472 (1984-03-01), Woodworth
patent: 4636906 (1987-01-01), Anderson et al.
patent: 4636907 (1987-01-01), Howell
patent: 4760483 (1988-07-01), Kugelman et al.
patent: 4772809 (1988-09-01), Koga et al.
patent: 4812943 (1989-03-01), Jones et al.

Affiliated with

Also associated with

Rating

Hybrid contactor for DC airframe power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hybrid contactor for DC airframe power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid contactor for DC airframe power supply will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-24708