FIELD: transport engineering; vehicle electrical equipment.
SUBSTANCE: invention can be used as device of automatic protection circuit of electrical equipment. Key device is connected between ground formed by vehicle body and first output of current sensor. Second output is connected with minus terminal of storage battery. Key device control input is connected to output of control circuit on microcontroller. First input of control circuit is connected to first output of current sensor of storage battery. Second input is connected to starter cut-in signal circuit. Third input is connected to communication channel. Fourth input is connected to ignition cut-in signal circuit. Fifth input is connected to first output of hand switch. Second output of hand switch is connected to plus terminal of storage battery. Control circuit is connected by one wire to minus terminal of storage battery and by other wire, to plus terminal of storage battery.
EFFECT: provision of protection of electrical equipment under all operating conditions of vehicle.
1 dwg
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