Thermionic in a sentence

This type is called a thermionic tube or thermionic valve.

As the tube output required little electronic processing, a distinct advantage in the thermionic valve era due to minimal valve count and low power consumption, the instrument achieved great popularity as a portable radiation detector.

Bell Labs did not develop a satisfactory thermionic diode for microwave reception.

Cold electrodes can also spontaneously produce electron clouds via thermionic emission when small incandescent regions (called cathode spots or anode spots) are formed.

Colossus used thermionic valves (vacuum tubes) and thyratrons to perform Boolean and counting operations.

Electrons, however, could not pass in the reverse direction because the plate was not heated and thus not capable of thermionic emission of electrons.

History of electronic components further Vacuum tubes (Thermionic valves) were one of the earliest electronic components.

In order to move from the hot emitter to the vacuum, an electron's energy must exceed the emitter Fermi level by an amount : determined simply by the thermionic work function of the emitter.

Pressure is now obsolete but tension is still used, for example within the phrase " high tension " (HT) which is commonly used in thermionic valve ( vacuum tube ) based electronics.

Receivers with thermionic valves became commonplace before spark-gap transmitters were replaced by continuous wave transmitters.

Semiconductor devices have replaced thermionic devices (vacuum tubes) in most applications.

Similar to the thermionic case described above, the liberated electrons can be extracted into a collector and produce a detectable current, if an electric field is applied into the surface of the emitter.

The Audion was incompletely evacuated and ionization of residual gas in it caused it to function somewhat differently from the later thermionic "hard vacuum" triodes.

The heater is electrically isolated from the surrounding cathode and simply serves to heat the cathode sufficiently for thermionic emission of electrons.

The increased thermal motion of the metal atoms "knocks" electrons out of the surface, an effect called thermionic emission.

The negative electrostatic field created by the grid in the vicinity of the cathode would inhibit thermionic emission and reduce the current to the plate.

Thermionic emission can be used to measure the work function of both the hot emitter and cold collector.

They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum.

This type of circuit was used for thermionic valve (tube) technology.

Tungsten is normally used in thermionic electron guns because it has the highest melting point and lowest vapor pressure of all metals, thereby allowing it to be electrically heated for electron emission, and because of its low cost.