control electrode

The latter is unique in that it can be turned back off by the control electrode after conduction begins.

Alternative control electrodes are used such as a mesh between anode and cathode.

There is a third electrode charged negatively with respect to the cathode, called the Wehnelt or control electrode.

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

Adam guessed that the system was inserting the controlling electrodes into the patients' brains using the CAT scanner to ensure proper placement.

Like vacuum tubes, it contains a hot cathode and an anode, but also a control electrode which behaves somewhat like the grid of a triode.

When the control electrode starts conduction, the gas ionizes, after which the control electrode can no longer stop the current; the tube "latches" into conduction.

A dielectric insulator coated with a hydrophobic is added to the plates to decrease the wettability of the surface and to add capacitance between the droplet and the control electrode.

The high voltage equipment must also supply the low voltage, above 5 V, for the cathode heating, and negative voltage up to about 1000 V for the control electrode.

With tungsten cathodes, emission current densities about 100 mA/mm can be achieved, but only a small portion of the emitted electrons takes part in beam formation, depending on the electric field produced by the anode and control electrode voltages.

By means of a small electrical voltage applied to a control electrode, the so-called Gate electrode, a single atom is reversibly moved in and out of a tiny junction, in this way closing and opening an electrical contact.

When the control electrode is made less negative, electrons from the cathode can travel to the anode because the positive attraction from the anode prevails over the negative repulsion caused by the slightly negative voltage on the control grid.

Each time a pulse is applied to a control electrode, a glow discharge moves to a step electrode; by providing ten electrodes in each tube and cascading the tubes, a counter system can be developed and the count observed by the position of the glow discharges.

The display section's anode was usually directly connected to the receiver's full HT+ voltage, whilst the triode-anode was (usually internally) connected to a control electrode mounted between cathode and the target-anode, and externally connected to HT+ via a high-value resistor, 1 megohm typically.