Toko Kabushiki Kaisha

Toshihiro Takahashi

Masaaki Totsuka

Kachiyasu Satoh

Takahiro Inokuchi

A piezoelectric transformer driving circuit comprises a piezoelectric transformer which boosts an input voltage to obtain a voltage required in igniting a cold cathode tube, a restart circuit which detects the voltage output from said piezoelectric transformer and allows said piezoelectric transformer to repeatedly output a high voltage required in initially igniting said cold cathode tube, a PWM controller which allows said piezoelectric transformer to intermittently output a voltage in order to adjust the brightness of said cold cathode tube, and a stopping unit which stops the control operation of said PWM controller when restart circuit is operative.

Piezoelectric transformer driving circuit

A display type push button having a push button body with a display window on the front end, a passage formed therein, and an elastic display plate laid in the passage in such a manner as to reciprocate along the passage to display the 'on' and 'off' states of a switch coupled to the push button, comprises a mechanism which makes the movement of the display plate larger than the stroke of the operating rod of the switch, whereby the area of the display plate appearing in the display window is large enough to clearly detect the operations of the switch.

Growing community of inventors

Tsurugashima, Japan

Toshihiro Takahashi