| 摘要 |
PURPOSE:To set freely the VL-IL characteristic by connecting a current bypass circuit between a constant current circuit and a common terminal and providing a comparison control circuit and a bias circuit between an input terminal and the common terminal. CONSTITUTION:A constant current circuit and a discharge preventing circuit are connected in series between an input terminal and a constant voltage output terminal and an electronic switch is connected between a discharge preventing circuit connecting point of the constant current circuit and the common terminal. The current bypass circuit is connected between the constant current circuit and the common terminal and the bias circuit and the comparison control circuit are connected in series between the input terminal and the common terminal. The bias circuit controls the DC voltage applied to the constant current circuit and the comparison control circuit generating a current signal to control the switching of th electronic switch and the discharge preventing circuit. The signal driving the comparison control circuit is supplied from the constant current circuit and the constant voltage output terminal.
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