discussing the vacuum tube diode characteristics

1.   vacuum tube diode characteristics

the most important  of a diode  is the plate characteristics , this gives the relationships between the plate current and the plate voltage at a given cathode temperature. according to child’s law in a space charge limited region , the late current is completely controlled by the plate voltage and it is independent of cathode temperature.

 also the plate resistance  which limit the flow of current in a diode, it is thee resistance offered by the diode . it is of two types

·       d.c plate resistance

·       and a.c plate resistance

the D.C plate resistance  is the resistance offered by the diode by direct current and A.C plate resistance is the resistance offered by the diode in a.c current and it is the ratio of small change in plate voltage across diode resulting in change in the plate current.

 vacuum tubes are electronic device that are use for the flow of electrons through a vacuum. these tubes are instrumental to the development of electrons.

vacuum tubes has wide applications ranging from radio, long distance applications, sound distance application, electronic computers, industrial automations though these are plden day electronics.

 vacuum tubes usually contain cathode  as the electron emitter and an anode as the electron collector  and one or more electrode old grid for controlling  the flow of electrons are place between the anode and cathode.

  these electrons are housed in a highly evacuated glass envelop. i.e evacuating the is held positive with respect to cathode so that emitted electrons are applied to the plate and the ability of the vacuum to enable them to perform different function.

  operation of  vacuum