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IPC-Stelle: H03K 17/00 Hauptgruppe [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 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 17/04 Hierarchieinformationen		. Modifications for accelerating switching [3]
H03K 17/041 Hierarchieinformationen		. . without feedback from the output circuit to the control circuit [6]
H03K 17/0412 Hierarchieinformationen		. . . by measures taken in the control circuit [6]
H03K 17/0414 Hierarchieinformationen		. . . . Anti-saturation measures [6]
H03K 17/0416 Hierarchieinformationen		. . . by measures taken in the output circuit [6]
H03K 17/042 Hierarchieinformationen		. . by feedback from the output circuit to the control circuit [6]
H03K 17/0422 Hierarchieinformationen		. . . Anti-saturation measures [6]
H03K 17/0424 Hierarchieinformationen		. . . by the use of a transformer [6]
H03K 17/06 Hierarchieinformationen		. Modifications for ensuring a fully conducting state [3]
H03K 17/08 Hierarchieinformationen		. Modifications for protecting switching circuit against overcurrent or overvoltage [3]
H03K 17/081 Hierarchieinformationen		. . without feedback from the output circuit to the control circuit [6]
H03K 17/0812 Hierarchieinformationen		. . . by measures taken in the control circuit [6]
H03K 17/0814 Hierarchieinformationen		. . . by measures taken in the output circuit [6]
H03K 17/082 Hierarchieinformationen		. . by feedback from the output to the control circuit [6]
H03K 17/10 Hierarchieinformationen		. Modifications for increasing the maximum permissible switched voltage [3]
H03K 17/12 Hierarchieinformationen		. Modifications for increasing the maximum permissible switched current [3]
H03K 17/13 Hierarchieinformationen		. Modifications for switching at zero crossing (generating an impulse at zero crossing H03K 5/1536) [3]
H03K 17/14 Hierarchieinformationen		. Modifications for compensating variations of physical values, e.g. of temperature [3]
H03K 17/16 Hierarchieinformationen		. Modifications for eliminating interference voltages or currents [3]
H03K 17/18 Hierarchieinformationen		. Modifications for indicating state of switch [3]
H03K 17/20 Hierarchieinformationen		. Modifications for resetting core switching units to a predetermined state [3]
H03K 17/22 Hierarchieinformationen		. Modifications for ensuring a predetermined initial state when the supply voltage has been applied (bi-stable generators H03K 3/12) [3]
H03K 17/24 Hierarchieinformationen		. . Storing the actual state when the supply voltage fails [3]
H03K 17/26 Hierarchieinformationen		. Modifications for temporary blocking after receipt of control pulses [3]
H03K 17/28 Hierarchieinformationen		. Modifications for introducing a time delay before switching (modifications to provide a choice of time-intervals for executing more than one switching action H03K 17/296) [3]
H03K 17/284 Hierarchieinformationen		. . in field-effect transistor switches [3]
H03K 17/288 Hierarchieinformationen		. . in tube switches [3]
H03K 17/292 Hierarchieinformationen		. . in thyristor, unijunction transistor or programmable unijunction transistor switches [3]
H03K 17/296 Hierarchieinformationen		. Modifications to provide a choice of time-intervals for executing more than one switching action and automatically terminating their operation after the programme is completed (electronic clocks comprising means to be operated at preselected times or after preselected time-intervals G04G 15/00) [3]
H03K 17/30 Hierarchieinformationen		. Modifications for providing a predetermined threshold before switching (shaping pulses by thresholding H03K 5/08) [3]
H03K 17/51 Hierarchieinformationen		. characterised by the use of specified components (H03K 17/04-H03K 17/30, H03K 17/94 take precedence) [3]
H03K 17/52 Hierarchieinformationen		. . by the use, as active elements, of gas-filled tubes [3]
H03K 17/54 Hierarchieinformationen		. . by the use, as active elements, of vacuum tubes (using diodes H03K 17/74) [3]
H03K 17/56 Hierarchieinformationen		. . by the use, as active elements, of semiconductor devices (using diodes H03K 17/74) [3]
H03K 17/567 Hierarchieinformationen		. . . Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT [6]
H03K 17/58 Hierarchieinformationen		. . . the devices being tunnel diodes [3]
H03K 17/60 Hierarchieinformationen		. . . the devices being bipolar transistors (bipolar transistors having four or more electrodes H03K 17/72) [3]
H03K 17/605 Hierarchieinformationen		. . . . with galvanic isolation between the control circuit and the output circuit (H03K 17/78 takes precedence) [5]
H03K 17/61 Hierarchieinformationen		. . . . . using transformer coupling [5]
H03K 17/615 Hierarchieinformationen		. . . . in a Darlington configuration [5]
H03K 17/62 Hierarchieinformationen		. . . . Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors (logic circuits H03K 19/00; code converters H03M 5/00, H03M 7/00) [3]
H03K 17/64 Hierarchieinformationen		. . . . having inductive loads [3]
H03K 17/66 Hierarchieinformationen		. . . . Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will [3]
H03K 17/68 Hierarchieinformationen		. . . . specially adapted for switching ac currents or voltages [3]
H03K 17/687 Hierarchieinformationen		. . . the devices being field-effect transistors [3]
H03K 17/689 Hierarchieinformationen		. . . . with galvanic isolation between the control circuit and the output circuit (H03K 17/78 takes precedence) [5]
H03K 17/691 Hierarchieinformationen		. . . . . using transformer coupling [5]
H03K 17/693 Hierarchieinformationen		. . . . Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors (logic circuits H03K 19/00; code converters H03M 5/00, H03M 7/00) [3]
H03K 17/695 Hierarchieinformationen		. . . . having inductive loads (protecting switching circuit against inductive flyback voltage H03K 17/08) [6]
H03K 17/70 Hierarchieinformationen		. . . the devices having only two electrodes and exhibiting negative resistance (the devices being tunnel diodes H03K 17/58) [3]
H03K 17/72 Hierarchieinformationen		. . . Bipolar semiconductor devices with more than two PN junctions, e.g. thyristors, programmable unijunction transistors, or with more than three electrodes, e.g. silicon controlled switches, or with more than one electrode connected to the same conductivity region, e.g. unijunction transistors [3]
H03K 17/722 Hierarchieinformationen		. . . . with galvanic isolation between the control circuit and the output circuit (H03K 17/78 takes precedence) [5]
H03K 17/723 Hierarchieinformationen		. . . . . using transformer coupling [5]
H03K 17/725 Hierarchieinformationen		. . . . for ac voltages or currents (H03K 17/722, H03K 17/735 take precedence) [3, 5]
H03K 17/73 Hierarchieinformationen		. . . . for dc voltages or currents (H03K 17/722, H03K 17/735 take precedence) [3, 5]
H03K 17/732 Hierarchieinformationen		. . . . . Measures for enabling turn-off [5]
H03K 17/735 Hierarchieinformationen		. . . . Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors (H03K 17/722 takes precedence; logic circuits H03K 19/00; code converters H03M 5/00, H03M 7/00) [3, 5]
H03K 17/74 Hierarchieinformationen		. . by the use, as active elements, of diodes (by the use of more than one type of semiconductor device H03K 17/567; by the use of tunnel diodes H03K 17/58; by the use of negative resistance diodes H03K 17/70) [3]
H03K 17/76 Hierarchieinformationen		. . . Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors (logic circuits H03K 19/00; code H03M 5/00, H03M 7/00) [3]
H03K 17/78 Hierarchieinformationen		. . by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled [3]
H03K 17/785 Hierarchieinformationen		. . . controlling field-effect transistor switches [5]
H03K 17/79 Hierarchieinformationen		. . . controlling semiconductor switches with more than two PN-junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region [5]
H03K 17/795 Hierarchieinformationen		. . . controlling bipolar transistors [5]
H03K 17/80 Hierarchieinformationen		. . by the use, as active elements, of non-linear magnetic or dielectric devices [3]
H03K 17/81 Hierarchieinformationen		. . . Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors (logic circuits H03K 19/00; code converters H03M 5/00, H03M 7/00) [3]
H03K 17/82 Hierarchieinformationen		. . . the devices being transfluxors [3]
H03K 17/84 Hierarchieinformationen		. . . the devices being thin-film devices [3]
H03K 17/86 Hierarchieinformationen		. . . the devices being twistors [3]
H03K 17/88 Hierarchieinformationen		. . by the use, as active elements, of beam-deflection tubes [3]
H03K 17/90 Hierarchieinformationen		. . by the use, as active elements, of galvano-magnetic devices, e.g. Hall-effect devices (H03K 17/95, H03K 17/97 take precedence) [2, 3]
H03K 17/92 Hierarchieinformationen		. . by the use, as active elements, of superconductive devices [2, 3]
H03K 17/94 Hierarchieinformationen		. characterised by the way in which the control signals are generated (mechanical structural details of control members of switches or keyboards, such as keys, push-buttons, levers or other mechanisms for transferring force to the activated elements, not directly producing electronic effects H01H; keyboards for special applications, see the relevant places, e.g. B41J, G06F 3/023, H04L 15/00, H04L 17/00, H04M 1/00) [3, 4]
H03K 17/945 Hierarchieinformationen		. . Proximity switches (H03K 17/96 takes precedence) [3]
H03K 17/95 Hierarchieinformationen		. . . using a magnetic detector [3]
H03K 17/955 Hierarchieinformationen		. . . using a capacitive detector [3]
H03K 17/96 Hierarchieinformationen		. . Touch switches (specially adapted for electronic time-pieces with no moving parts G04G 21/08) [3]
H03K 17/965 Hierarchieinformationen		. . Switches controlled by moving an element forming part of the switch [3]
H03K 17/967 Hierarchieinformationen		. . . having a plurality of control members, e.g. keyboard (H03K 17/969, H03K 17/972, H03K 17/98 take precedence) [4]
H03K 17/968 Hierarchieinformationen		. . . using opto-electronic devices [4]
H03K 17/969 Hierarchieinformationen		. . . . having a plurality of control members, e.g. keyboard [4]
H03K 17/97 Hierarchieinformationen		. . . using a magnetic movable element [3]
H03K 17/972 Hierarchieinformationen		. . . . having a plurality of control members, e.g. keyboard [4]
H03K 17/975 Hierarchieinformationen		. . . using a capacitive movable element [3]
H03K 17/98 Hierarchieinformationen		. . . . having a plurality of control members, e.g. keyboard [4]
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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