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When the patient is on the operating table and when highly sensitive and expensive equipment is being used, the accuracy and reliability of the rotary switches, coded switches, and encoders [...]

The National Electrical Manufacturers Assn (NEMA) defines toggles switches as devices for making, breaking or changing the connections in an electric circuit. Toggle switches controls incandescent and fluorescent lighting as well as receptacles in home living rooms and bedrooms. NEMA's General Requirements for Wiring Devices contains circuit designs on toggle switches that are useful in knowing how these equipment work., Toggle switches are everywhere, controlling incandescent and fluorescent lighting as well as receptacles in home living rooms and bedrooms. Although these wiring devices are commodities in electrical construction, it's important [...]

Pressure switches are used as a protective device in fluid power systems. They consist of a pressure sensor, an opposing spring and an electric switch, with diaphragms, bourdon tubes and pistons the most common used sensing elements. Currently, they are available in single-pole double-throw and double-pole double-throw configurations. To select a pressure switch for a particular application, it is important to consider its setpoint adjustability, deadband, and repeatability., Pressure switches accept pressure signals and, at a preselected pressure, open or close internal electrical switching elements. They may respond to rising or falling pressure, or a pressure differential. The [...]

Mechanical switches are used in both commercial and industrial environments. For commercial applications, such switches are not sealed and are only capable of supporting low-current uses. For industrial uses, switches must be able to withstand a high degree of wear and tear. Industrial switches are classified into five basic categories, namely: standard duty, heavy duty, heavy-duty oiltight, miniature oiltight and multilight-control oiltight., Mechanical switches can be divided into two basic types. The first, commercial and appliance switches, are used in fairly clean environments such as offices or homes. They are not sealed [...]

DP switches suit high line pressures and are available in piston models (up to 10,000 psig) and diaphragm models (up to 3,000 psig). Piston models range from 0-5 to 0-1000 [...]

Several specifications pertinent to switches are discussed. The movement differential specification supplies a range it it pertains to basic and switches of the plunger-operated type. Other essential specifications are overtravel, operating force, aggregate overtravel force, releasing force, contact force and repeatability. The last mentioned specification makes use of three other specifications to explain its result., Movement differential: For basic and plunger-actuated switches, this is stated as a range. The low limit indicates the smallest differential obtainable. For switches with leaf or lever actuators, the movement [...]