| 摘要 |
PURPOSE:To stabilize control with a simple constitution by inputting respectively set voltage to the +input terminal of a comparator in which -input terminal applied voltage is lower than detected voltage and the detected voltage to the +input terminal of comparator in which the -input applied voltage is lower than the set voltage. CONSTITUTION:To the -input terminal of a first comparator 3 is applied voltage lower than the detected voltage of a potentiometer 6 by a predetermined voltage of the maximum voltage difference divided by resistors 12, 13 according to the forward voltage characteristics of a diode 8. similarly, to the -input terminal of a second comparator 4 is applied voltage lower than set voltage from a variable resistor 5 for adjusting temperature by predetermined voltage determined by a diode 7 and resistors 10, 11. In this constitution, the -terminal voltage of first comparator 3 is always lower than the detected voltage, the -terminal voltage of second comparator 4 is lower than the +terminal voltage of first comparator 3, and the +terminal voltage of second comparator 4 is lower than the -terminal voltage of first comparator 3, so that an actuator can be stably controlled. |
