Abstract: An oscillation circuit includes a piezoelectric oscillator, a resistive element, and an exciting circuit connected between an input node and an output node in parallel with one another, a first capacitor connected between the input node and a ground node, and a second capacitor connected between the output node and the ground node. The exciting circuit includes a NAND circuit and first and second inverters that are cascade-connected. Oscillation of the piezoelectric oscillator is started when an enable signal input to the NAND circuit is switched to an H level.

Abstract: An oscillation circuit includes a piezoelectric oscillator, a resistive element, and an exciting circuit connected between an input node and an output node in parallel with one another, a first capacitor connected between the input node and a ground node, and a second capacitor connected between the output node and the ground node. The exciting circuit includes a NAND circuit and first and second inverters that are cascade-connected. Oscillation of the piezoelectric oscillator is started when an enable signal input to the NAND circuit is switched to an H level.

Abstract: A print head has m driver devices 1 that are fed with a supply voltage VDD and that control the driving of resistive elements acting as heaters and a regulator 2 that is fed with a supply voltage VH higher than the supply voltage VDD and that converts the supply voltage VH into a supply voltage VG, which the regulator 2 then feeds to the individual driver devices 1.

Abstract: A print head has m driver devices 1 that are fed with a supply voltage VDD and that control the driving of resistive elements acting as heaters and a regulator 2 that is fed with a supply voltage VH higher than the supply voltage VDD and that converts the supply voltage VH into a supply voltage VG, which the regulator 2 then feeds to the individual driver devices 1.

Abstract: A print head has m driver devices 1 that are fed with a supply voltage VDD and that control the driving of resistive elements acting as heaters and a regulator 2 that is fed with a supply voltage VH higher than the supply voltage VDD and that converts the supply voltage VH into a supply voltage VG, which the regulator 2 then feeds to the individual driver devices 1.

Abstract: A print head has m driver devices 1 that are fed with a supply voltage VDD and that control the driving of resistive elements acting as heaters and a regulator 2 that is fed with a supply voltage VH higher than the supply voltage VDD and that converts the supply voltage VH into a supply voltage VG, which the regulator 2 then feeds to the individual driver devices 1.

Abstract: A method is for operating a boiler to heat a bioreactor with gases produced from the bioreactor, while supplying excessive hot water to outside of a system. In the method, the boiler is operated to turn on and off depending upon temperature of a hot water tank when a level of a gas holder is higher than an intermediate level H.sub.1. Hot water is unconditionally supplied to the outside of the system when the level of the gas holder is higher than a high level H.sub.2, and hot water is supplied to the outside when temperature of the hot water tank is higher than an intermediate temperature L.sub.1 and the level of the gas holder is between the high level H.sub.2 and the intermediate level H.sub.1. The supply of the hot water is stopped when the level of the gas holder is less than the intermediate level H.sub.1.

Abstract: A packaging container for a liquid and more specifically for coffee milk has a container proper having a bottom opening and a bottom cap to seal the bottom opening of the container proper after the container is filled. The container proper having a sectional shape suitable for stacking containers in each other, a top plane having a planar dimension and shape suitable for supporting the container stably when it is turned upside down and being provided with a pouring opening having a lid with hinge action given by a light-gage hinge portion formed at one end of the lid. The lid having a vertical flange at the inside face, whose lower end is connected integrally with a peripheral edge of the pouring opening with an easily broken light-gage portion formed therebetween. The easily broken light-gage portion being provided by forming a score at a connecting portion and the deepest point of the score being positioned outwardly of an outside face of the vertical flange of the lid.