Selection display for automatic gearbox has selected gear display for indicating current gear selection according to signal provided via interface circuit for driving magnetic valve

摘要

The display device has a power supply device (100) for providing a stable power supply for a circuit whilst the vehicle is being driven along, a controller (200) for determining a gear selection corresp. to the driving state of the vehicle to output a defined switch control signal, an interface circuit (300) for controlled switching on and off of a magnetic valve according to the control signal output by the controller to deliver a predefined signal corresp. to a selected gear according to a program and a selected gear display device (400) for indicating the current selection according to the signal provided via the interface circuit..