Commonly used in travelling wave tubes (TWTs), radio frequency (RF) power amplifiers, satellite applications and medical devices such as electron guns, control grids amplify RF signals and control the flow of electrons through devices.

A control grid (or gun grid) is indispensable in high-power systems used in the medical, defence and aerospace industries. It is used in amplifying thermionic valves (vacuum tubes) such as the triode, tetrode and pentode, controlling the flow of electrons from the cathode to the anode (plate) electrode. Usually, it is made up of a cylindrical screen or helix of fine wire surrounding the cathode and is surrounded in turn by the anode.

Discover more about the role of control grids and their applications and find out where Tecan fits in.

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