Abstract: A power transmission device for a vehicle includes a casing mounted on a vehicle, a rotational shaft supported in the casing and rotated by an engine, first and second speed changing shafts, supported in the casing and changing a speed of rotation of the rotational shaft, a first speed clutch mechanism and a second speed clutch mechanism provided between the rotational shaft and the first and second speed changing shafts, respectively, and an output shaft outputting rotation of one speed changing shaft selected by each of the clutch mechanisms. A first brake device applying a braking force to the first speed changing shaft and a second brake device applying the braking force to the second speed changing shaft are provided in the casing.

Abstract: The pulse generator is provided in a semiconductor integrated circuit device, in the form of a power-on clearing circuit. The generator is comprised of a capacitor chargeable to produce a power-on clearing pulse, a current-flow regulating element for regulatively charging the capacitor to output a state signal, and a voltage detector operative in an active condition for monitoring a level of a rising power source voltage to control the current-flow regulating element and being responsive to the state signal to switch to a rest condition. By such construction, a power-on clearing pulse is stably generated regardless of a rising rate of the power source voltage while eliminating a current consumption after completion of the generation of the power-on clearing pulse.