Abstract: A steering console for tractors providing digital readout displays activated by a keyboard strategically located within easy finger reach of the operator. A multitude of vital tractor functions are automatically continuously monitored and, simply by touch of appropriate colored switch pads on the keyboard, the operator at will changes the digital displays to the different functions he desires to read. In one preferred embodiment thereof, my invention forms part of a unitary tilt-telescope steering wheel arrangement and displays dual digital readouts, such as of the ground speed and engine speed for being viewed for comparison side by side and simultaneously in the console.

Abstract: The protection system includes an over-temperature warning lamp in addition to the usual charge indicator lamp. Both lamps light at ignition as a test, then both go out. If the alternator should fail, both lamps again light. If the alternator overheats, only the warning lamp is lighted and current to the field coil is removed.

Abstract: An automotive battery charging system having a voltage regulator circuit with an improved feedback network for controlling the duty cycle and frequency of current in the field coil of the alternator. The feedback network includes a filtering circuit to minimize the effect of voltage spikes and ripple on feedback current. The filtering circuit is in the form of a variety of networks for clamping filtering and regulating.