emitter contact
21Lau Wai Shing — Wai Shing Lau (simplified Chinese name: 刘偉成, born July 29, 1955 in Hong Kong) is also known as Lau Wai Shing. The family name of Lau is sometimes spelled as Liu like Liu Bang (founder of the Han dynasty) or Liu Shaoqi or Liu Bocheng. This is… …
22Darlington transistor — Circuit diagram of a Darlington pair using NPN transistors In electronics, the Darlington transistor (often called a Darlington pair) is a compound structure consisting of two bipolar transistors (either integrated or separated devices) connected …
23Drip irrigation — A dripper Drip irrigation, also known as trickle irrigation or microirrigation or localized irrigation , is an irrigation method which saves water and fertilizer by allowing water to drip slowly to the roots of plants, either onto the soil… …
24Tetrode transistor — A tetrode transistor is any transistor having four active terminals.Early tetrode transistorsThere were two types of tetrode transistor developed in the early 1950s as an improvement over the point contact transistor and the later grown junction… …
25Antenna (radio) — Whip antenna on car …
26Organic light-emitting diode — Demonstration of a flexible OLED device A green emitting OLED device An …
27Field emission display — A field emission display (FED) is a display technology that incorporates flat panel display technology that uses large area field electron emission sources to provide electrons that strike colored phosphor to produce a color image as a electronic …
28Traffic signal preemption — is a type of system that allows the normal operation of traffic lights to be preempted, often to assist emergency vehicles.[1][2] The most common use of these systems is to manipulate traffic signals in the path of an emergency vehicle, stopping… …
29U.S. Carrier Group tactics — Naval tactics have played a crucial role in modern battles and wars. The presence of land, changing water depths, weather, detection and electronic warfare, the speed at which actual combat occurs and other factors especially air power render… …
30List of weapons in Star Trek — Contents 1 Energy weapons 2 Projectile weapons 3 Biological, radioactive, and chemical weapons …
