Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
  • H03K17/14—Modifications for compensating variations of physical values, e.g. of temperature
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J3/00—Continuous tuning
  • H03J3/02—Details
  • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
  • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
  • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
  • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
  • H03J5/0218—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of preset values
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
  • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
  • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
  • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
  • H03K17/603—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors with coupled emitters

Landscapes

• Electronic Switches (AREA)
• Channel Selection Circuits, Automatic Tuning Circuits (AREA)
• Amplifiers (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=25763812

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (2)

Citations (1)

• 1973
  • 1973-08-31 NL NL7311991A patent/NL161939C/xx not_active IP Right Cessation
  • 1973-09-06 GB GB4192273A patent/GB1447869A/en not_active Expired
  • 1973-09-06 AT AT774473A patent/AT336708B/de not_active IP Right Cessation
  • 1973-09-06 IT IT6966373A patent/IT996660B/it active
  • 1973-09-07 JP JP10038473A patent/JPS5738048B2/ja not_active Expired
  • 1973-09-10 FR FR7332482A patent/FR2204078B1/fr not_active Expired

Patent Citations (1)

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