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Each of the above switching circuits has its own application.
The scheme (1) is applied for continuous monitoring of the vehicle.
The limitation of this scheme is a constant discharge of the car battery. If
the car battery is used for a long time without recharging, it can be
completely discharged
The scheme (1) is applied for monitoring of the vehicle and fuel
consumption only at battery disconnect switch on. When the battery
disconnect switch is off, the tracker and the fuel gauge will be
disconnected from the power supply.
Scheme (1).
