hot cathode

For this purpose a new generation of hot cathode machines must be developed.

This used a hot cathode that caused an electric current to flow in a vacuum.

They come in two types: hot cathode and cold cathode.

Heated electrodes or hot cathodes, frequently called filaments, are much more common.

Down here," and Channing began to trace on the tablecloth, "we'll put in a hot cathode.

The Coolidge tube, also called hot cathode tube, is the most widely used.

Both hot cathode and cold cathode type devices are encountered.

Cold cathode discharge lamps use higher voltages than hot cathode ones.

The vacuum tube's anode (plate) is high enough to collect all the electrons emitted from the hot cathode.

In the hot cathode version, an electrically heated filament produces an electron beam.

Discharge tubes with hot cathodes have an envelope filled with low pressure gas and containing two electrodes.

Hot cathode gauges are accurate from 10 torr to 10 torr.

Barium oxide is used as a coating for hot cathodes, for example, those in cathode ray tubes.

The "hot cathode" type generates an electron beam by an electron gun with tungsten filament.

Evaporated conductive coatings are needed only for use with high voltage hot cathode cathodoluminescence instruments.

Hot cathodes typically achieve much higher power density than cold cathodes, emitting significantly more electrons from the same surface area.

The other type of cathode is a hot cathode, which is heated by electric current passing through a filament.

The first true electronic vacuum tubes, invented around 1906, used this hot cathode technique, and they superseded Crookes tubes.

A hot cathode is at an advantage, as ionization of the gas is made easier; thus, the tube's control electrode is more sensitive.

In vacuum tubes, a hot cathode is a cathode electrode which emits electrons due to thermionic emission.

Hot cathode gauges can be damaged or lose their calibration if they are exposed to atmospheric pressure or even low vacuum while hot.

A cold cathode is distinguished from a hot cathode that is heated to induce thermionic emission of electrons.

Instead, they use a more reliable and controllable source of electrons, a heated filament or hot cathode which releases electrons by thermionic emission.

All cavity magnetrons consist of a hot cathode with a high (continuous or pulsed) negative potential created by a high-voltage, direct-current power supply.

Lanthanum oxide and the boride are used in electronic vacuum tubes as hot cathode materials with strong emissivity of electrons.