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IPC-Stelle: H03K 3/45 2-Punkt Untergruppe [Version 2010.01, Sprache EN - English]

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Symbol		Titel
A Hierarchieinformationen		SECTION A — HUMAN NECESSITIES
B Hierarchieinformationen		SECTION B — PERFORMING OPERATIONS; TRANSPORTING
C Hierarchieinformationen		SECTION C — CHEMISTRY; METALLURGY
D Hierarchieinformationen		SECTION D — TEXTILES; PAPER
E Hierarchieinformationen		SECTION E — FIXED CONSTRUCTIONS
F Hierarchieinformationen		SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G Hierarchieinformationen		SECTION G — PHYSICS
H Hierarchieinformationen		SECTION H — ELECTRICITY
H01 Hierarchieinformationen		BASIC ELECTRIC ELEMENTS
H02 Hierarchieinformationen		GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H03 Hierarchieinformationen		BASIC ELECTRONIC CIRCUITRY
H03B Hierarchieinformationen		GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS (measuring, testing G01R; generators adapted for electrophonic musical instruments G10H; speech synthesis G10L 13/00; masers, lasers H01S; dynamo-electric machines H02K; power inverter circuits H02M; by using pulse techniques H03K; automatic control of generators H03L; starting, synchronisation or stabilisation of generators where the type of generator is irrelevant or unspecified H03L; generation of oscillations in plasma H05H)
H03C Hierarchieinformationen		MODULATION (measuring, testing G01R; masers, lasers H01S; modulators specially adapted for use in dc amplifiers H03F 3/38; modulating pulses H03K 7/00; so-called modulators capable only of switching between predetermined states of amplitude, frequency or phase H03K 17/00, H04L; coding, decoding or code conversion, in general H03M; synchronous modulators specially adapted for colour television H04N 9/65)
H03D Hierarchieinformationen		DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER (masers, lasers H01S; circuits capable of acting both as modulator and demodulator H03C; details applicable to both modulators and frequency-changers H03C; demodulating pulses H03K 9/00; transforming types of pulse modulation H03K 11/00; coding, decoding or code conversion, in general H03M; repeater stations H04B 7/14; demodulators adapted for digitally modulated-carrier systems H04L 27/00; synchronous demodulators adapted for colour television H04N 9/66)
H03F Hierarchieinformationen		AMPLIFIERS (measuring, testing G01R; optical parametric amplifiers G02F; circuit arrangements with secondary emission tubes H01J 43/30; masers, lasers H01S; dynamo-electric amplifiers H02K; control of amplification H03G; coupling arrangements independent of the nature of the amplifier, voltage dividers H03H; amplifiers capable only of dealing with pulses H03K; repeater circuits in transmission lines H04B 3/36, H04B 3/58; application of speech amplifiers in telephonic communication H04M 1/60, H04M 3/40)
H03G Hierarchieinformationen		CONTROL OF AMPLIFICATION (impedance networks, e.g. attenuators, H03H; control of transmission in lines H04B 3/04)
H03H Hierarchieinformationen		IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (measuring, testing G01R; arrangements for producing a reverberation or echo sound G10K 15/08; impedance networks or resonators consisting of distributed impedances, e.g. of the waveguide type, H01P; control of amplification, e.g. bandwidth control of amplifiers, H03G; tuning resonant circuits, e.g. tuning coupled resonant circuits, H03J; networks for modifying the frequency characteristics of communication systems H04B)
H03J Hierarchieinformationen		TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS (indicating arrangements for measuring G01D; measuring, testing G01R; remote-control in general G05, G08; automatic control or stabilisation of generators H03L)
H03K Hierarchieinformationen		PULSE TECHNIQUE (measuring pulse characteristics G01R; mechanical counters having an electrical input G06M; information storage devices in general G11; sample-and-hold arrangements in electric analogue stores G11C 27/02; construction of switches involving contact making and breaking for generation of pulses, e.g. by using a moving magnet, H01H; static conversion of electric power H02M; generation of oscillations by circuits employing active elements which operate in a non-switching manner H03B; modulating sinusoidal oscillations with pulses H03C, H04L; discriminator circuits involving pulse counting H03D; automatic control of generators H03L; starting, synchronisation, or stabilisation of generators where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) [4]
H03K 3/00 Hierarchieinformationen		Circuits for generating electric pulses; Monostable, bistable or multistable circuits (H03K 4/00 takes precedence; for digital computers G06F 1/025) [5]
H03K 3/01 Hierarchieinformationen		. Details [3]
H03K 3/011 Hierarchieinformationen		. . Modifications of generator to compensate for variations in physical values, e.g. voltage, temperature [6]
H03K 3/012 Hierarchieinformationen		. . Modifications of generator to improve response time or to decrease power consumption [6]
H03K 3/013 Hierarchieinformationen		. . Modifications of generator to prevent operation by noise or interference [3]
H03K 3/014 Hierarchieinformationen		. . Modifications of generator to ensure starting of oscillations [6]
H03K 3/015 Hierarchieinformationen		. . Modifications of generator to maintain energy constant [6]
H03K 3/017 Hierarchieinformationen		. . Adjustment of width or dutycycle of pulses (pulse width modulation H03K 7/08) [3]
H03K 3/02 Hierarchieinformationen		. Generators characterised by the type of circuit or by the means used for producing pulses (H03K 3/64-H03K 3/84 take precedence)
H03K 3/021 Hierarchieinformationen		. . by the use, as active elements, of more than one type of element or means, e.g. BIMOS, composite devices such as IGBT [6]
H03K 3/023 Hierarchieinformationen		. . by the use of differential amplifiers or comparators, with internal or external positive feedback [3]
H03K 3/0231 Hierarchieinformationen		. . . Astable circuits [6]
H03K 3/0232 Hierarchieinformationen		. . . Monostable circuits [6]
H03K 3/0233 Hierarchieinformationen		. . . Bistable circuits [6]
H03K 3/0234 Hierarchieinformationen		. . . Multistable circuits [6]
H03K 3/027 Hierarchieinformationen		. . by the use of logic circuits, with internal or external positive feedback [3]
H03K 3/03 Hierarchieinformationen		. . . Astable circuits [3]
H03K 3/033 Hierarchieinformationen		. . . Monostable circuits [3]
H03K 3/037 Hierarchieinformationen		. . . Bistable circuits [3]
H03K 3/038 Hierarchieinformationen		. . . Multistable circuits [6]
H03K 3/04 Hierarchieinformationen		. . by the use, as active elements, of vacuum tubes only, with positive feedback (H03K 3/023, H03K 3/027 take precedence) [3]
H03K 3/05 Hierarchieinformationen		. . . using means other than a transformer for feedback
H03K 3/06 Hierarchieinformationen		. . . . using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator
H03K 3/08 Hierarchieinformationen		. . . . . astable
H03K 3/09 Hierarchieinformationen		. . . . . . Stabilisation of output [2]
H03K 3/10 Hierarchieinformationen		. . . . . monostable
H03K 3/12 Hierarchieinformationen		. . . . . bistable
H03K 3/13 Hierarchieinformationen		. . . . . . Bistables with hysteresis, e.g. Schmitt trigger [6]
H03K 3/14 Hierarchieinformationen		. . . . . multistable
H03K 3/16 Hierarchieinformationen		. . . using a transformer for feedback, e.g. blocking oscillator with saturable core
H03K 3/22 Hierarchieinformationen		. . . . specially adapted for amplitude comparison, i.e. Multiar
H03K 3/26 Hierarchieinformationen		. . by the use, as active elements, of bipolar transistors with internal or external positive feedback (H03K 3/023, H03K 3/027 take precedence) [2]
H03K 3/28 Hierarchieinformationen		. . . using means other than a transformer for feedback
H03K 3/281 Hierarchieinformationen		. . . . using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
H03K 3/282 Hierarchieinformationen		. . . . . astable
H03K 3/283 Hierarchieinformationen		. . . . . . Stabilisation of output [2]
H03K 3/284 Hierarchieinformationen		. . . . . monostable
H03K 3/286 Hierarchieinformationen		. . . . . bistable [3]
H03K 3/287 Hierarchieinformationen		. . . . . . using additional transistors in the feedback circuit (H03K 3/289 takes precedence) [3]
H03K 3/288 Hierarchieinformationen		. . . . . . using additional transistors in the input circuit (H03K 3/289 takes precedence) [3]
H03K 3/2885 Hierarchieinformationen		. . . . . . . the input circuit having a differential configuration [5]
H03K 3/289 Hierarchieinformationen		. . . . . . of the master-slave type [3]
H03K 3/2893 Hierarchieinformationen		. . . . . . Bistables with hysteresis, e.g. Schmitt trigger [6]
H03K 3/2897 Hierarchieinformationen		. . . . . . . with an input circuit of differential configuration [6]
H03K 3/29 Hierarchieinformationen		. . . . . multistable
H03K 3/30 Hierarchieinformationen		. . . using a transformer for feedback, e.g. blocking oscillator
H03K 3/313 Hierarchieinformationen		. . by the use, as active elements, of semiconductor devices with two electrodes, one or two potential-jump barriers, and exhibiting a negative resistance characteristic [3]
H03K 3/315 Hierarchieinformationen		. . . the devices being tunnel diodes
H03K 3/33 Hierarchieinformationen		. . by the use, as active elements, of semiconductor devices exhibiting hole storage or enhancement effect
H03K 3/335 Hierarchieinformationen		. . by the use, as active elements, of semiconductor devices with more than two electrodes and exhibiting avalanche effect
H03K 3/35 Hierarchieinformationen		. . by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region (H03K 3/023, H03K 3/027 take precedence) [3]
H03K 3/351 Hierarchieinformationen		. . . the devices being unijunction transistors (H03K 3/352 takes precedence) [3]
H03K 3/352 Hierarchieinformationen		. . . the devices being thyristors [3]
H03K 3/3525 Hierarchieinformationen		. . . . Anode gate thyristors or programmable unijunction transistors [6]
H03K 3/353 Hierarchieinformationen		. . by the use, as active elements, of field-effect transistors with internal or external positive feedback (H03K 3/023, H03K 3/027 take precedence) [2, 3]
H03K 3/354 Hierarchieinformationen		. . . Astable circuits [3]
H03K 3/355 Hierarchieinformationen		. . . Monostable circuits [3]
H03K 3/356 Hierarchieinformationen		. . . Bistable circuits [3]
H03K 3/3562 Hierarchieinformationen		. . . . of the master-slave type [6]
H03K 3/3565 Hierarchieinformationen		. . . . Bistables with hysteresis, e.g. Schmitt trigger [6]
H03K 3/3568 Hierarchieinformationen		. . . Multistable circuits [6]
H03K 3/357 Hierarchieinformationen		. . by the use, as active elements, of bulk negative resistance devices, e.g. Gunn-effect devices [2]
H03K 3/36 Hierarchieinformationen		. . by the use, as active elements, of semiconductors, not otherwise provided for [2]
H03K 3/37 Hierarchieinformationen		. . by the use, as active elements, of gas-filled tubes, e.g. astable trigger circuits (H03K 3/55 takes precedence)
H03K 3/38 Hierarchieinformationen		. . by the use, as active elements, of superconductive devices [3]
H03K 3/40 Hierarchieinformationen		. . by the use, as active elements, of electrochemical cells
H03K 3/42 Hierarchieinformationen		. . by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
H03K 3/43 Hierarchieinformationen		. . by the use, as active elements, of beam deflection tubes
H03K 3/45 Hierarchieinformationen		. . by the use, as active elements, of non-linear magnetic or dielectric devices
H03K 3/47 Hierarchieinformationen		. . . the devices being parametrons
H03K 3/49 Hierarchieinformationen		. . . the devices being ferro-resonant
H03K 3/51 Hierarchieinformationen		. . . the devices being multi-aperture magnetic cores, e.g. transfluxors
H03K 3/53 Hierarchieinformationen		. . by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback (H03K 3/335 takes precedence)
H03K 3/537 Hierarchieinformationen		. . . the switching device being a spark gap [3]
H03K 3/543 Hierarchieinformationen		. . . the switching device being a vacuum tube [3]
H03K 3/55 Hierarchieinformationen		. . . the switching device being a gas-filled tube having a control electrode
H03K 3/57 Hierarchieinformationen		. . . the switching device being a semiconductor device
H03K 3/59 Hierarchieinformationen		. . by the use of galvano-magnetic devices, e.g. Hall-effect devices [2]
H03K 3/64 Hierarchieinformationen		. Generators producing trains of pulses, i.e. finite sequences of pulses
H03K 3/66 Hierarchieinformationen		. . by interrupting the output of a generator
H03K 3/70 Hierarchieinformationen		. . . time intervals between all adjacent pulses of one train being equal
H03K 3/72 Hierarchieinformationen		. . with means for varying repetition rate of trains
H03K 3/78 Hierarchieinformationen		. Generating a single train of pulses having a predetermined pattern, e.g. a predetermined number
H03K 3/80 Hierarchieinformationen		. Generating trains of sinusoidal oscillations (by interrupting H03C, H04L)
H03K 3/84 Hierarchieinformationen		. Generating pulses having a predetermined statistical distribution of a parameter, e.g. random pulse generators [2]
H03K 3/86 Hierarchieinformationen		. Generating pulses by means of delay lines and not covered by the preceding subgroups [2]
H03K 4/00 Hierarchieinformationen		Generating pulses having essentially a finite slope or stepped portions (generation of supply voltages from deflection waveforms H04N 3/18)
H03K 5/00 Hierarchieinformationen		Manipulating pulses not covered by one of the other main groups in this subclass (circuits with regenerative action H03K 3/00, H03K 4/00; by the use of non-linear magnetic or dielectric devices H03K 3/45)
H03K 6/00 Hierarchieinformationen		Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass (circuits with regenerative action H03K 4/00)
H03K 7/00 Hierarchieinformationen		Modulating pulses with a continuously-variable modulating signal
H03K 9/00 Hierarchieinformationen		Demodulating pulses which have been modulated with a continuously-variable signal
H03K 11/00 Hierarchieinformationen		Transforming types of modulation, e.g. position-modulated pulses into duration-modulated pulses
H03K 12/00 Hierarchieinformationen		Producing pulses by distorting or combining sinusoidal waveforms (shaping pulses H03K 5/01; combining sinewaves using elements operating in a non-switching manner H03B) [3]
H03K 17/00 Hierarchieinformationen		Electronic switching or gating, i.e. not by contact-making and -breaking (selection of the stylus or auxiliary electrode in electric printing B41J 2/405; sample-and-hold arrangements G11C 27/02; switching or interrupting devices in waveguides H01P; gated amplifiers H03F 3/72; switching arrangements for exchange systems using static devices H04Q 3/52)
H03K 19/00 Hierarchieinformationen		Logic circuits, i.e. having at least two inputs acting on one output (circuits for computer systems using fuzzy logic G06N 7/02); Inverting circuits
H03K 21/00 Hierarchieinformationen		Details of pulse counters or frequency dividers
H03K 23/00 Hierarchieinformationen		Pulse counters comprising counting chains; Frequency dividers comprising counting chains (H03K 29/00 takes precedence)
H03K 25/00 Hierarchieinformationen		Pulse counters with step-by-step integration and static storage; Analogous frequency dividers
H03K 27/00 Hierarchieinformationen		Pulse counters in which pulses are continuously circulated in a closed loop; Analogous frequency dividers (feedback shift register counters H03K 23/54) [4]
H03K 29/00 Hierarchieinformationen		Pulse counters comprising multi-stable elements, e.g. for ternary scale, for decimal scale; Analogous frequency dividers
H03L Hierarchieinformationen		AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES (of dynamo-electric generators H02P) [3]
H03M Hierarchieinformationen		CODING, DECODING OR CODE CONVERSION, IN GENERAL (using fluidic means F15C 4/00; optical analogue/digital converters G02F 7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C) [4]
H04 Hierarchieinformationen		ELECTRIC COMMUNICATION TECHNIQUE
H05 Hierarchieinformationen		ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H99 Hierarchieinformationen		SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]

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