Meter control circuit

Abstract

In combination with a meter movement having a pointer movable over a variable value indicating scale having numbered variable value indicating marks forming respective scale segments having substantially different compression or expansion ratios and representing progressively increasing variable values over the entire extent of said segments, a meter control circuit comprising respective amplifiers for controlling the variation of pointer movement over said respective segments of said scale, each of the amplifiers being capable of producing an output which reaches a maximum possible output level when the signal fed to the input thereof is of a value which is to move the pointer of said meter movement to the uppermost point of the associated segment of the scale, means for summing the outputs of said respective amplifiers and feeding the same to said meter movement. Signal directing means are provided for respectively directing to said amplifiers signals resulting from the flow of respective incremental ranges of current values in said input circuits to the amplifiers to cause the meter movement pointer to traverse said respective segments of said scale. The signal directing means directs said signals to the amplifier associated with the next highest scale segment of said meter movement scale only after the output of the amplifier associated with the next lowest segment of the scale has reached its maximum output value.