Photoemissive cells or Tubes - Working Principle and Types: These Photoemissive cells or Tubes devices are basically of two types namely vacuum type and gas filled type. 1. Vacuum Type…
Luminescence - Definition and Types: When a system absorbs energy in some form or other, it may be partly re-emitted as radiation. This phenomenon is called luminescence. Luminescence may occur…
What is Photoelectric Effect?: When monochromatic light is incident on a clean surface of a material, then under certain conditions, electrons, also called photoelectrons, are emitted from the surface. The…
Power Diode - Structure, Symbol, Characteristics and Types: Diodes find many applications in electronics and electrical engiÂneering circuits. Power diodes play a significant role in power electronics for conversion of…
Compound Semiconductor Materials: Most of the compound semiconductor materials are formed from the combinations of group III and group V elements. A portion of the periodic table listing the more…
Explain Conduction in Gas: Explain Conduction in Gas - The introduction of small amount of gas into the electron evacuated tubes entirely changes the operating characteristics—materially giving in general a…
Construction and Working of Vacuum Pentode: In order to retain the advantages of screen grid and eliminate the harmful effects of attracting the electrons due to secondary emission by the…
Vacuum Triode, Construction and Working: Construction of Vacuum Triode - The construction and the schematic symbol used for a vacuum triode are illustrated in Fig. 5.8. It, as the name…