| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stroboscope circuit hardly receiving noise from a trigger switch and easy to obtain a desired light control performance. <P>SOLUTION: A light control circuit is provided with a constant voltage generating element for generating a constant voltage in synchronization with a trigger to a discharge tube, a photometric circuit constituted of a photo-detector and a capacitor connected in parallel with the constant voltage generating element, and a switching circuit comprising a 1st switching element to be turned on when the light control circuit detects a predetermined light quantity and a 2nd switching element to be turned on when the 1st switching element is turned on, and is characterized in being configured so as to stop emitting light from the discharge tube by turning on the 2nd switching element of the switching circuit, and also connecting a series circuit of capacitance and resistance for power supply and noise prevention of the light control circuit between the light control circuit and the trigger switch. <P>COPYRIGHT: (C)2003,JPO |
