LIQUID LEVEL CONTROLLER

A level control apparatus is disclosed for controlling a liquid level between a maximum and a minimum. An elastic circuit generates a reference pulse which receives the pulse and triggers the generation of first and second reference pulses. The first reference pulse has a width which corresponds to the function of the maximum level of liquid and the second reference pulse has a width which corresponds to the function of the minimum of liquid. A capacitance probe supplies an output to a level sensing means which generates an output control pulse which varies in time with respect to the liquid level. A response circuit receives the first and second reference pulses and the control pulse and generates a first response when the reference pulse and the control pulse occur at a time which indicates that the fluid is at the maximum level and a second response signals when the second response indicates that the fluid has dropped to a minimum level with a time provided between the minimum and maximum where no response is developed.