JPS50155955A - - Google Patents

Info

Publication number
JPS50155955A
JPS50155955A JP50055363A JP5536375A JPS50155955A JP S50155955 A JPS50155955 A JP S50155955A JP 50055363 A JP50055363 A JP 50055363A JP 5536375 A JP5536375 A JP 5536375A JP S50155955 A JPS50155955 A JP S50155955A
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP50055363A
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS50155955A publication Critical patent/JPS50155955A/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0254—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter
    • H03J5/0263—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter the digital values being held in an auxiliary non erasable memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
JP50055363A 1974-05-10 1975-05-08 Pending JPS50155955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7406277A SE7406277L (en) 1974-05-10 1974-05-10 PROGRAMMABLE VOLTAGE SOURCE.

Publications (1)

Publication Number Publication Date
JPS50155955A true JPS50155955A (en) 1975-12-16

Family

ID=20321101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50055363A Pending JPS50155955A (en) 1974-05-10 1975-05-08

Country Status (5)

Country Link
JP (1) JPS50155955A (en)
DE (1) DE2520676A1 (en)
FR (1) FR2270634A1 (en)
NL (1) NL7505107A (en)
SE (1) SE7406277L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1061633B (en) * 1976-05-03 1983-04-30 Voxson Spa RADIORI CEVITORE OR TUNER EQUIPPED WITH STORAGE MEDIA IN SOLID STATE FOR A MULTIPLE OF RECEPTION FREQUENCIES
US4164711A (en) * 1977-10-31 1979-08-14 Rca Corporation Tuning system including a memory for storing tuning information with user controls arranged to facilitate its programming
US4289999A (en) * 1979-05-14 1981-09-15 Ampex Corporation Digital variable voltage level control circuit with automatic return to neutral
DE3216547C1 (en) * 1982-05-04 1983-10-06 Krautkraemer Gmbh Method and circuit device for generating and changing a predetermined number of independent DC voltages

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873002A (en) * 1971-12-29 1973-10-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873002A (en) * 1971-12-29 1973-10-02

Also Published As

Publication number Publication date
FR2270634B1 (en) 1977-04-15
NL7505107A (en) 1975-11-12
FR2270634A1 (en) 1975-12-05
DE2520676A1 (en) 1975-11-13
SE7406277L (en) 1975-11-11

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