(under the class definition) Subject matter wherein the source of power or bias for the output and control electrodes or the output electrode of the active element of the oscillator comprises raw alternating current, which current
is applied directly to the electrodes.
(1) Note. Where the raw alternating current is merely applied to the control electrode of the active element of the oscillator classification is not in this subclass, but elsewhere in this class in accordance with the particular type of oscillator systems or the nature of the control. See the search notes below for oscillator systems which may have alternating current applied to the control grid of the active element thereof may be found, wherein one oscillator is used to vary the amplitude of the oscillation generated by another oscillator; for cascaded or series connected oscillators; for a subclass wherein plural oscillators may be synchronized from an external source or where one oscillator synchronizes another; for oscillators with periodic or repetitious amplitude and/or frequency varying means (e.g., tremolo, vibrato); for and oscillators with synchronizing triggering or pulsing means involving grid bias control ; for blocking oscillators, for relaxation oscillators in general and for oscillators in general.
SEE OR SEARCH THIS CLASS, SUBCLASS:
47, for oscillator systems which may have alternating current applied to the control grid of the active element thereof, wherein one oscillator is used to vary the amplitude of the oscillation generated by another oscillator.
50+, for cascaded or series connected oscillators.
55, wherein plural oscillators may be synchronized from an external source or where one oscillator synchronizes another 106, for oscillators with periodic or repetitious amplitude and/or frequency varying means (e.g., tremolo, vibrato).
145, oscillators with synchronizing triggering or pulsing means involving grid bias control may be found in this subclass (145) for multivibrators
149, for blocking oscillators.
153, for relaxation oscillators in general
172+, for oscillators in general..
185+, for oscillators with particular source of power or bias voltage.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
137+, for gaseous space discharge device or vacuum diode systems supplied with a polyphase alternating current, and subclasses 246+ for similar systems supplied with pulsating or alternating current supply (see the search notes appended
to subclasses 246+ for further fields of search for similar subject matter).
330, Amplifiers,
114+, for linear amplifiers wherein an unrectified alternating current is applied to an electrode of an active element or elements, thereof.
