| 摘要 |
PURPOSE:To prevent any chattering in a lock up clutch by providing a variable resistance for hysteresis branching from a clutch driving comparator to which a lock up clutch is connected. CONSTITUTION:A clutch driving comparator (operational amplifier) 26 compares the comparison voltage value with a detected voltage value given from a diode pump 22 acting as a F-V converter which converts a pulse signal output from a pulse generator 11 for detecting the rotation of a turbine as a pulse signal, and if the detected value is more than the comparison voltage value, outputs a signal for making connection of a lock up clutch. Hereat, setting of a hysteresis width is extremely facilitated owing to a resistance 33 and a voltage follower (operational amplifier) 34 interposed between the input side and output side of the comparison voltage of the comparator and a variable resistor (potentiometer) 37 for hysteresis branched therefrom. |
