Russian version

Home page

Search:

For contact - E-mail

[an error occurred while processing this directive]
To add or edit advertisment:     e-mail:     password:
IPC 7
  H03K 4/00 - H03K 5/26  
H03K00600-H03K01798
  H03K 19/00 - H03K 29/06  

SECTION H – ELECTRICITY


H 03BASIC ELECTRONIC CIRCUITRY


H 03 KPULSE 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]


6/

00Manipulating 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)

Note

 In this group, the input signals are of the pulse type.  [3]

6/

02.Amplifying pulses

6/

04.Modifying slopes of pulses, e.g. S-correction (S-correction in television H04N 3/23)


7/

00Modulating pulses with a continuously-variable modulating signal

7/

02.Amplitude modulation, i.e. PAM

7/

04.Position modulation, i.e. PPM

7/

06.Frequency or rate modulation, i.e. PFM or PRM

7/

08.Duration or width modulation

7/

10.Combined modulation, e.g. rate modulation and amplitude modulation


9/

00Demodulating pulses which have been modulated with a continuously-variable signal

9/

02.of amplitude-modulated pulses

9/

04.of position-modulated pulses

9/

06.of frequency- or rate-modulated pulses

9/

08.of duration- or width-modulated pulses

9/

10.of pulses having combined modulation


11/

00Transforming types of modulation, e.g. position-modulated pulses into duration-modulated pulses


12/

00Producing pulses by distorting or combining sinusoidal waveforms (shaping pulses H03K 5/01; combining sinewaves using elements operating in a non-switching manner H03B) [3]


17/

00Electronic 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)

17/

04.Modifications for accelerating switching  [3]

17/

041..without feedback from the output circuit to the control circuit  [6]

17/

0412...by measures taken in the control circuit  [6]

17/

0414....Anti-saturation measures  [6]

17/

0416...by measures taken in the output circuit  [6]

17/

042..by feedback from the output circuit to the control circuit  [6]

17/

0422...Anti-saturation measures  [6]

17/

0424...by the use of a transformer  [6]

17/

06.Modifications for ensuring a fully conducting state  [3]

17/

08.Modifications for protecting switching circuit against overcurrent or overvoltage  [3]

17/

081..without feedback from the output circuit to the control circuit  [6]

17/

0812...by measures taken in the control circuit  [6]

17/

0814...by measures taken in the output circuit  [6]

17/

082..by feedback from the output to the control circuit  [6]

17/

10.Modifications for increasing the maximum permissible switched voltage  [3]

17/

12.Modifications for increasing the maximum permissible switched current  [3]

17/

13.Modifications for switching at zero crossing (generating an impulse at zero crossing H03K 5/1536)  [3]

17/

14.Modifications for compensating variations of physical values, e.g. of temperature  [3]

17/

16.Modifications for eliminating interference voltages or currents  [3]

17/

18.Modifications for indicating state of switch  [3]

17/

20.Modifications for resetting core switching units to a predetermined state  [3]

17/

22.Modifications for ensuring a predetermined initial state when the supply voltage has been applied (bi-stable generators H03K 3/12)  [3]

17/

24..Storing the actual state when the supply voltage fails  [3]

17/

26.Modifications for temporary blocking after receipt of control pulses  [3]

17/

28.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]

17/

284..in field-effect transistor switches  [3]

17/

288..in tube switches  [3]

17/

292..in thyristor, unijunction transistor or programmable unijunction transistor switches  [3]

17/

296.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]

17/

30.Modifications for providing a predetermined threshold before switching (shaping pulses by thresholding H03K 5/08)  [3]

17/

51.characterised by the use of specified components (H03K 17/04 to H03K 17/30, H03K 17/94 take precedence)  [3]

17/

52..by the use, as active elements, of gas-filled tubes  [3]

17/

54..by the use, as active elements, of vacuum tubes (using diodes H03K 17/74)  [3]

17/

56..by the use, as active elements, of semiconductor devices (using diodes H03K 17/74)  [3]

17/

567...Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT  [6]

17/

58...the devices being tunnel diodes  [3]

17/

60...the devices being bipolar transistors (bipolar transistors having four or more electrodes H03K 17/72)  [3]

17/

605....with galvanic isolation between the control circuit and the output circuit (H03K 17/78 takes precedence)  [5]

17/

61.....using transformer coupling  [5]

17/

615....in a Darlington configuration  [5]

17/

62....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]

17/

64....having inductive loads  [3]

17/

66....Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will  [3]

17/

68....specially adapted for switching ac currents or voltages  [3]

17/

687...the devices being field-effect transistors  [3]

17/

689....with galvanic isolation between the control circuit and the output circuit (H03K 17/78 takes precedence)  [5]

17/

691.....using transformer coupling  [5]

17/

693....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]

17/

695....having inductive loads (protecting switching circuit against inductive flyback voltage H03K 17/08)  [6]

17/

70...the devices having only two electrodes and exhibiting negative resistance (the devices being tunnel diodes H03K 17/58)  [3]

17/

72...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]

17/

722....with galvanic isolation between the control circuit and the output circuit (H03K 17/78 takes precedence)  [5]

17/

723.....using transformer coupling  [5]

17/

725....for ac voltages or currents (H03K 17/722, H03K 17/735 take precedence)  [3,5]

17/

73....for dc voltages or currents (H03K 17/722, H03K 17/735 take precedence)  [3,5]

17/

732.....Measures for enabling turn-off  [5]

17/

735....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]

17/

74..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]

17/

76...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]

17/

78..by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled  [3]

17/

785...controlling field-effect transistor switches  [5]

17/

79...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]

17/

795...controlling bipolar transistors  [5]

17/

80..by the use, as active elements, of non-linear magnetic or dielectric devices  [3]

17/

81...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]

17/

82...the devices being transfluxors  [3]

17/

84...the devices being thin-film devices  [3]

17/

86...the devices being twistors  [3]

17/

88..by the use, as active elements, of beam-deflection tubes  [3]

17/

90..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]

17/

92..by the use, as active elements, of superconductive devices  [2,3]

17/

94.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]

17/

945..Proximity switches (H03K 17/96 takes precedence)  [3]

17/

95...using a magnetic detector  [3]

17/

955...using a capacitive detector  [3]

17/

96..Touch switches (specially adapted for electronic time-pieces with no moving parts G04G 1/10)  [3]

17/

965..Switches controlled by moving an element forming part of the switch  [3]

17/

967...having a plurality of control members, e.g. keyboard (H03K 17/969, H03K 17/972, H03K 17/98 take precedence)  [4]

17/

968...using opto-electronic devices  [4]

17/

969....having a plurality of control members, e.g. keyboard  [4]

17/

97...using a magnetic movable element  [3]

17/

972....having a plurality of control members, e.g. keyboard  [4]

17/

975...using a capacitive movable element  [3]

17/

98....having a plurality of control members, e.g. keyboard  [4]

  H03K 4/00 - H03K 5/26    H03K 19/00 - H03K 29/06  
 

Copyright SciTecLibrary


To add the material   Terms of registration   Terms for placing technology, inventions, productions & other informations   Price list

You always can buy kamagra online now!
A few occasions when such websites were giving away Free Viagra Trial as real pills intended for door-to-door.