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The battery charger (model EL-81) supplies power to the calculator's charging input at voltages of 8.7 and 9.6 volts; [9] the combined input power rating is about 3.2 watts. [10] Sharp NR-AA Rechargeable Battery. The EL-8's battery pack is much smaller than that of the QT-8B, and this was critical in reducing the EL-8's size and weight.
Sharp portable TV Sharp MD-MS701H. In 1953, Hayakawa Electric started producing the first Japan-made TV sets (the "Sharp TV3-14T"). In 1964, the company developed the world's first transistor calculator (the Sharp CS-10A), which was priced at JP¥535,000 (US$1,400). It took Sharp several years to develop the product as they had no experience in ...
A power conditioner (also known as a line conditioner or power line conditioner) is a device intended to improve the quality of the power that is delivered to electrical load equipment. The term most often refers to a device that acts in one or more ways to deliver a voltage of the proper level and characteristics to enable load equipment to ...
Portable/Power Miser: Introduced in 1965 and produced until the early 1990s, this was the first room air conditioner advertised as a portable unit by Friedrich. In 1974, the name Power Miser appeared along with a major engineering change, which saw a less efficient and light duty Tecumseh AH/AJ reciprocating compressor replace the high ...
Packaged terminal air conditioner installed in a residential apartment. A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air conditioning system intended to be mounted through a wall. [1] The first practical semi-portable air conditioning unit invented by engineers at Chrysler Motors. It entered the market in ...
The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [ 1 ] [ 2 ] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.
A two-stage air conditioner is designed to operate on high and low settings during different weather conditions and seasons. The high setting is used during extreme weather, and the low setting is used during moderate weather. This type of air conditioner produces a balanced temperature and is in use for a longer period of time.
A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.
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