Battery-spark and reverse polarity protection method and...

Details Battery-spark and reverse polarity protection method and... Battery-spark and reverse polarity protection method and...

2009-05-29

2011-12-06

Patel, Dharti (Department: 2836)

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

C320S165000, C320S166000

Reexamination Certificate

active

08072729

ABSTRACT:
The protection method and circuit provide a time delay after a first contact with the power source is made until full power is allowed connection to the trolling motor. This time delay is longer than the “bounce” time, or the time a user may “bounce” a contact on and off of a battery terminal, during a typical batter connection. Therefore, this delay prevents sparking at the battery terminal. During the time delay, an initial pre-charge brings the main capacitor's voltage up to the battery voltage in a low stress, no spark process prior to being connected directly across the battery source terminal by relay contacts.

REFERENCES:
patent: 5069642 (1991-12-01), Henderson
patent: 5292269 (1994-03-01), Plost et al.
patent: 5892338 (1999-04-01), Moore et al.
patent: 5909064 (1999-06-01), Feil et al.
patent: 5910690 (1999-06-01), Dorsey et al.
patent: 6054831 (2000-04-01), Moore et al.

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