CONTROL CIRCUITS FOR GENERATING CONTROL SIGNALS PROPORTIONAL TO THE POSITION OF AN INPUT DEVICE

摘要

A pulse amplitude modulation circuit having constant frequency pulses of at least a predetermined amplitude being modulated with a linearly increasing output signal whose amplitude is proportional to the mechanical position of a variable position device such as a throttle control to cause a pul se amplitude modulation output signal to be generated that represents the physical position of the input device such as a throttle.