高圧水銀ランプ遅相形点灯回路の電流波形の一改善法

抄録

On a certain part of the ballast in the lag type operating circuit for the high pressure mercury arc lamp (H 100), a tap is made to form a by-pass circuit in order to reduce the third harmonics current caused by the third hamonics voltage may flow into the input terminal, or the side of the current where power is suplied.
(1) The value of the coil and optimum capacity value of the condenser in the by-pass circuit are theoretically obtained. The following (2) and (3) are conducted with sinusoidal rated voltage impressed at the input terminal.
(2) The optimum capacity value of the condenser in the by-pass circuit is obtained in the following manner: the capacity value of the condenser in the by-pass circuit is varied and the wave analysis of the voltage and current of distorted waves at each element are made, and the distortion factor of the electric current flowing in the current on the side of the power source, the effective, power, reactive power, distorted power and power factor at the power source are measured.
(3) A condenser is connected in parallel with the input terminal in order to make the power factor of the fundamental current at the power source 1, and experiments are made on harmonic characteristics on the starting to consider them.