.~.~.~ With discharge control means (e.g., grid) {1}
122
.~.~.~.~ Grid-like electrode
DEFINITION
Classification: 363/122
Grid-like electrode:
(under subclass 121) Subject matter wherein the discharge control means is of the type which controls the flow of space current by controlling the space charge between the cathode and the anode.
(1) Note. A common designation for this type of control means is a grid. The grid is usually interposed in the discharge path between the cathode and anode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119, for electronic tube rectifier systems wherein the electronic tube is provided with grid control means.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses for miscellaneous systems for supplying current to electronic tubes of the gas or vapor type which have a control grid. Many of these systems inherently operate to convert D.C. to A.C. and are closely analogous to the systems in this subclass. Note especially
229, where the system includes a plurality of tubes with control grids and a commutating condenser connected between the anodes or cathodes to cause the tubes to become conductive alternately. See subclass 235 where the electronic tube has a plurality of cathodes or anodes and a control grid with a commutating condenser connected between the anodes or cathodes to cause the discharge to alternate between the plural cathodes or anodes (converts D.C. to A.C.). See subclasses 237+ where a condenser is connected in the supply circuit of a gas or vapor tube having a grid, the condenser causing the current through the tube to flow periodically similar to the current flow in a relaxation oscillator circuit. See the class definition, See Lines With Other Classes, for the line between Class 315 and Class 363.
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,
597+, for miscellaneous tube circuits with grid control means.
