What Is Hot Cathode?

Comparison of the Stability of Hot Cathode and Cold Cathode Ionization Gauges When the ionization gauge is used as a reference standard or substandard, stability is particularly important. Hot cathode electrode: When a material with a high melting point and boiling point, such as C, W, is used as the cathode, the cathode can be heated to a high temperature.The electrons in the cathode region of the arc are mainly provided by the cathode's thermal emission. It is called a hot cathode electrode.

Hot cathode is through

Comparative Study on the Stability of Hot Cathode and Cold Cathode Ionization Gauges

When the ionization gauge is used as a reference or substandard,

China hot cathode ionization vacuum gauge market analysis report

Hot cathode glow discharge

Design of hot cathode ionization vacuum gauge

Combined with the detector for measuring high vacuum--high vacuum ionization gauge, the structure, working principle and application of the hot cathode ionization vacuum gauge are described; the method design using the combination of pulse width modulation (PWM) technology and push-pull conversion is introduced A simple, practical, stable and reliable driving circuit for a hot cathode ionization vacuum gauge. The performance of the vacuum gauge circuit is stable and reliable. Because it adopts PWM control and undergoes a transformer current conversion, it does not directly control the large current of the hot cathode, thereby reducing The power consumption is greatly reduced, the number of high-current heating elements is greatly reduced, and the temperature rise of the whole machine is effectively suppressed.