(under subclass 100) Subject matter wherein an input signal wave is modified to or triggers an alternating current sinusoidal wave at the output.
(1) Note. Included here are signals having a cosinusoidal waveform.
SEE OR SEARCH THIS CLASS, SUBCLASS:
32, for a shock excited tuned circuit utilized in pulse width or spacing selection.
104, for miscellaneous converters of an AC signal input to DC
voltage output.
105+, for synthesizing of an output waveform.
113+, for systems providing frequency conversion. 306+, for systems wherein the amplitude of an output wave is controlled within specific limits.
596, for miscellaneous circuits including an oscillatory or shock excited portion.
SEE OR SEARCH CLASS
84, Music,
600+, for various systems for modifying electric currents or potentials in combination with converting the varying electric currents or potentials into sound waves for the production of musical tones.
128, Surgery,
419+, for systems wherein the usual 60 Hz commercial alternating current is converted to high frequency AC or pulsating current for application to the human body.
178, Telegraphy,
66.1+, for systems relating to frequency shift keying of an alternating current signal under the influence of a control pulse.
310, Electrical Generator or Motor Structure,
160, for structural details of a rotary mechanical AC frequency converter and subclass 161 for phase shifter type rotary AC dynamoelectric machines.
315, Electric Lamp and Discharge Devices: Systems, 378+, and 391+ for systems which deflect a cathode ray by a rotating electric field having conversion of pulse wave energy to alternating wave energy, subclasses 200+ for systems comprising a discharge device or rectifier in the supply circuit of a gaseous tube or tubes where the output may be an alternating circuit wave, subclasses 209+ for systems comprising a periodic switch in the supply circuit of a gaseous tube or tubes where the switch may be pulse controlled with the output an AC wave and subclasses 246+ for systems comprising a pulsating supply for gaseous tubes.
318, Electricity: Motive Power Systems,
138, for systems wherein a motor is of the space discharge device commutated type and wherein a pulsing current may be converted to an equivalent alternating current.
331, Oscillators, particularly
37+, for systems comprising the combination of oscillator with production of a beat frequency, subclass 45 for an oscillator with polyphase output, and subclasses 172+ for an oscillator combined with pulse actuated control or synchronization.
332, Modulators,
117+, or 144+ for devices for modulating the phase or frequency of a carrier wave by an arbitrarily varying control wave.
333, Wave Transmission Lines and Networks,
20, for systems comprising wave shape changing utilizing passive elements.
340, Communications: Electrical, appropriate subclasses for signaling or indicating devices responsive to pulse wave input and in which the output may or may not be an alternating current.
343, Communications: Radio Wave Antennas, appropriate subclasses for receivers for pulse wave transmitted carrier wave energy. 363, Electric Power Conversion Systems,
13+, for systems involving derectification, subclasses 148+ for systems including phase conversion, and subclass 157 for systems including frequency conversion wherein a single source is connected to a single load.
375, Pulse or Digital Communications,
1, 58 for pulse responsive systems, subclasses 62+ for systems for transmitting information including frequency shift keying, and subclasses 75+ for pulse responsive receivers.
455, Telecommunications,
313+, for systems whereby an input modulated carrier wave is modified by a wave derived from a local oscillator or other source in such a manner as to obtain an output wave the frequency of which is the sum or difference of the input wave and the modifying wave (i.e., a beat frequency).
