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These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.
A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.
The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.
Most user guides contain both a written guide and associated images. In the case of computer applications, it is usual to include screenshots of the human-machine interface(s), and hardware manuals often include clear, simplified diagrams. The language used is matched to the intended audience, with jargon kept to a minimum or explained thoroughly.
In air conditioning, an inverter compressor is a compressor that is operated with an inverter. In the hermetic type, it can either be a scroll or reciprocating compressor . This type of compressor uses a drive to control the compressor motor speed to modulate cooling capacity.
From 2011 to 2012, Apple released the iPhone 4s [133] and iPhone 5, [134] which featured improved cameras, an intelligent software assistant named Siri, and cloud-synced data with iCloud; the third-and fourth-generation iPads, which featured Retina displays; [135] [136] and the iPad Mini, which featured a 7.9-inch screen in contrast to the iPad ...
The FM-7 ("Fujitsu Micro 7") is a home computer created by Fujitsu. [2] [3] It was first released in 1982 and was sold in Japan and Spain. [4]It is a stripped-down version of Fujitsu's earlier FM-8 computer, [2] and during development it was referred to as the "FM-8 Jr.".
This is a list of products made by Yamaha Corporation.This does not include products made by Bösendorfer, which has been a wholly owned subsidiary of Yamaha Corporation since February 1, 2008.
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