Protection of appliances against reversal of battery polarity

Details Protection of appliances against reversal of battery polarity Protection of appliances against reversal of battery polarity

1982-11-18

1984-09-11

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Reverse phase responsive

361 88, 361187, 320 25, 307 10BP, 340636, H02H 318

Patent

active

044714009

ABSTRACT:
A device for protecting a battery driven electrical appliance against reversal of battery polarity comprises switching means, for connection into the supply circuit of the appliance to be protected, and a series combination of an electrical control for the switching means and a unidirectional semiconductor means, said combination having a first terminal connected to a supply terminal of the switching means and a second terminal for connection to a supply from the battery of polarity opposite that of the said supply terminal, for operating the switching means to interrupt supply of current to the appliance in the event of reversal of battery polarity.

REFERENCES:
patent: 3307097 (1967-02-01), Brewster
patent: 3308365 (1967-03-01), St. John
patent: 3313995 (1967-04-01), Bach et al.
patent: 3371330 (1968-02-01), Howard et al.
patent: 3659183 (1972-04-01), Carlson
patent: 3784972 (1974-01-01), Hults

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