Brilliance control circuit for controlling the brilliance of fluorescent display tubes
 A brilliance control circuit capable of automatically controlling the brilliance of fluorescent display tubes, comprising a lighting voltage regulating circuit incorporating a circuit element which decreases the lighting voltage when the current flowing through the fluorescent display tube increases, and increases the lighting voltage when the current decreases. 
Sharp Kabushiki Kaisha
G
G09G
inventional
Kenji Masanori Masanori
Watanabe Sano Ueyama