(under subclass 114) Subject matter wherein means are provided for delaying the operation of the electronic tube converter until conditions are such that its operation is safe, feasible, or desirable.
(1) Note. An example of such delay control is where the application of cathode, anode voltage is delayed until the cathode temperature has reached its operating value.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
102+, for miscellaneous systems for supplying electric current and/or potential to electronic tubes where the system includes means to supply heating current to the cathode or cathode heating circuit, and means for delaying the application of anode potential until the cathode has reached its operating potential. This subclass in Class 315 provides for vacuum tube systems as well as gas or vapor tube systems, provided that in the case of the vacuum tubes there is no control of the discharge control (e.g., grid) circuit. Systems which are not limited to having a gas or vapor type electronic tube and which include the discharge control circuit will be found in Class 327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, appropriate subclasses.
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, appropriate subclasses for miscellaneous electron tube systems having delayed or retarded operation of the tube. See the reference to Class 315, above.
