protection devices
41Motor controller — A motor controller is a device or group of devices that serves to govern in some predetermined manner the performance of an electric motor.[1] A motor controller might include a manual or automatic means for starting and stopping the motor,… …
42Electronic component — Various components An electronic component is a basic electronic element and may be available in a discrete form having two or more electrical terminals (or leads). These are intended to be connected together, usually by soldering to a printed… …
43Fuse (electrical) — A miniature time delay fuse used to protect electronic equipment, rated 0.3 amperes at 250 volts. 1.25 inches (about 32 mm) long …
44Climbing styles — Rock climbing may be divided into two broad categories: free climbing and aid climbing. * Free climbing requires the climber use only his/her bodily strength for upward progress. Commonly confused with free soloing which means to climb without a… …
45Earplug — Silicone rubber earplugs for protection against water, dust etc. An earplug is a device that is meant to be inserted in the ear canal to protect the wearer s ears from loud noises or the intrusion of water, foreign bodies, dust or excessive wind …
46Relay — This article is about the electrical component. For other uses, see Relay (disambiguation). Automotive style miniature relay, dust cover is taken off A relay is an electrically operated switch. Many relays use an electromagnet to operate a… …
47Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …
48A+ Core Hardware Exam — The A+ Hardware Exam is a certification exam for hardware in computing.Below is a summary of the 2003 A+ Hardware Exam objectives: Test Core Hardware Exam Domain 1 Installation, Configuration, and Upgrading 1.1 Identify the names, purpose, and… …
49High Voltage Isolation and Ground Potential Rise — This article outlines the principles of High Voltage Isolation (HVI) and Ground Potential Rise (GPR). Most often questions of concern arise to anyone associated with the use of any communication signal (analog or digital) via a metallic or fiber… …
50Whiplash (medicine) — Infobox Disease Name = PAGENAME Caption = DiseasesDB = 14122 ICD10 = ICD10|S|13|4|s|10 ICD9 = ICD9|847.0 ICDO = OMIM = MedlinePlus = 000025 eMedicineSubj = eMedicineTopic = MeshID = D014911 Whiplash and whiplash associated disorders (WAD)… …
