Power level indicator for an electric generator

Claim 1

In combination: An engine-driven A.C. electric generator with a substantially fixed voltage output; and a power output indicator for indicating remaining available output power, comprising, (a) a sensing transformer with a primary winding and a secondary winding, said primary winding being connected in series with the generator and a load, said secondary winding being connected in series with a rectifier and low pass filter so as to produce a D.C. voltage output proportional in amplitude to the A.C. electrical current flow from the generator, said primary and secondary windings of the sensing transformer being coupled so as to cause the voltage output of the secondary winding to decrease at a rate in substantially direct proportion to a decrease in generator output voltage as a consequence of increased current output from the generator to thereby compensate for a drop in voltage output of said generator at high current levels; and (b) a D.C. voltage sensitive meter means electrically connected to the low pass filter so as to provide a visual indication of the amount of power output being produced by the generator in comparison to its power output capacity.