US PATENT SUBCLASS 330 / 156
BOOTSTRAP COUPLING
Current as of: June, 1999
Click HD for Main Headings
Click for All Classes
DEFINITION
Classification: 330/156
(under the class definition) Subject matter wherein the signal input is floating and is applied between the control grid and cathode of a vacuum tube amplifying device, with the cathode having an impedance between it and ground which maintains the cathode voltage above ground, by reason of the anode current flowing through such impedance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
70+, for series energized amplifiers including those having signal coupling between cathode and grid similar to the subject matter in this subclass.
87+, for amplifiers having cathode impedance feedback particularly subclass 89 for cathode coupling between adjacent stages.
119, for push-pull amplifiers including coupling to the cathode.
153+, for amplifiers having interstage coupling to a cathode. 186+, for amplifiers having input coupling to a cathode.
SEE OR SEARCH CLASS
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,
589, for miscellaneous electron tube circuits with bootstrap circuit means.
