Kids Search. The Best Search Engine for K-12 Kids and Children.     

   web | images | video | facts | wiki | news | games | kidztube | apps








report a search problem







COMPANY RESOURCES LINKS SOCIAL
contact us education daily journal home facebook
about us make us your default search kidztalk twitter  
terms/privacy blocking websites kidznet pinterest  
advertise teacher zone wiki    
media link to us learning sites    
business / api solutions add a site image search    
affiliate program kidzsearch apps kidztube    
play youtube on kidzsearch games    
  voice search music    
  report a problem cool facts    
  settings news    
    search help    
    kidznet directory    
         










 mobile version

      Copyright 2005-2021 KidzSearch.com 
Structure of a vacuum tube triode
A vacuum tube, type 6P1P

A vacuum tube, also called a valve in British English, is an electronic device used in many older model radios, television sets, and amplifiers. The cathode is heated, as in a light bulb, so it will emit electrons. This is called thermionic emission. The anode is the part that accepts the emitted electrons. The device may have other parts. Vacuum tubes must be hot to work. Most are made of glass, thus are fragile and can break. Vacuum tubes were used in the first computers like the ENIAC, which were large and need much work to continue operating. view more...