FI964689A0 - Device for changing the level of an analog signal - Google Patents

Device for changing the level of an analog signal

Info

Publication number
FI964689A0
FI964689A0 FI964689A FI964689A FI964689A0 FI 964689 A0 FI964689 A0 FI 964689A0 FI 964689 A FI964689 A FI 964689A FI 964689 A FI964689 A FI 964689A FI 964689 A0 FI964689 A0 FI 964689A0
Authority
FI
Finland
Prior art keywords
changing
level
analog signal
analog
signal
Prior art date
Application number
FI964689A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI964689A (en
Inventor
Martti Koskinen
Original Assignee
Nokia Telecommunications Oy
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 by Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Priority to FI964689A priority Critical patent/FI964689A/en
Publication of FI964689A0 publication Critical patent/FI964689A0/en
Priority to PCT/FI1997/000715 priority patent/WO1998024174A1/en
Priority to AU50548/98A priority patent/AU5054898A/en
Priority to EP97913214A priority patent/EP0940002A1/en
Publication of FI964689A publication Critical patent/FI964689A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
FI964689A 1996-11-25 1996-11-25 Device for changing the analog signal level FI964689A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI964689A FI964689A (en) 1996-11-25 1996-11-25 Device for changing the analog signal level
PCT/FI1997/000715 WO1998024174A1 (en) 1996-11-25 1997-11-24 Device for changing level of analog signal
AU50548/98A AU5054898A (en) 1996-11-25 1997-11-24 Device for changing level of analog signal
EP97913214A EP0940002A1 (en) 1996-11-25 1997-11-24 Device for changing level of analog signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI964689A FI964689A (en) 1996-11-25 1996-11-25 Device for changing the analog signal level

Publications (2)

Publication Number Publication Date
FI964689A0 true FI964689A0 (en) 1996-11-25
FI964689A FI964689A (en) 1998-05-26

Family

ID=8547124

Family Applications (1)

Application Number Title Priority Date Filing Date
FI964689A FI964689A (en) 1996-11-25 1996-11-25 Device for changing the analog signal level

Country Status (4)

Country Link
EP (1) EP0940002A1 (en)
AU (1) AU5054898A (en)
FI (1) FI964689A (en)
WO (1) WO1998024174A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5986498A (en) * 1998-04-14 1999-11-16 Harman International Industries, Incorporated Audio direct from power supply
US6392476B1 (en) 2000-03-14 2002-05-21 Harman International Industries, Incorporated System and method of producing direct audio from a power supply

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2728377A1 (en) * 1977-06-23 1979-01-11 Siemens Ag CIRCUIT ARRANGEMENT FOR THE CONVERSION OF ELECTRICAL ENERGY
SE426761B (en) * 1980-12-09 1983-02-07 Ellemtel Utvecklings Ab Pulse-width modulated voltage converter for converting a DC voltage to a low frequency and preferably sinusoidal AC voltage
US4479175A (en) * 1982-08-13 1984-10-23 Honeywell Inc. Phase modulated switchmode power amplifier and waveform generator
US4847742A (en) * 1987-02-12 1989-07-11 Hitachi Video Engineering, Inc. Multi-channel inverter circuit
IT1244799B (en) * 1990-10-19 1994-09-05 Italtel Spa DC-AC CONVERTER

Also Published As

Publication number Publication date
EP0940002A1 (en) 1999-09-08
AU5054898A (en) 1998-06-22
FI964689A (en) 1998-05-26
WO1998024174A1 (en) 1998-06-04

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