JPS5797711A - Pwm-dsb wave generating circuit - Google Patents

Pwm-dsb wave generating circuit

Info

Publication number
JPS5797711A
JPS5797711A JP55174266A JP17426680A JPS5797711A JP S5797711 A JPS5797711 A JP S5797711A JP 55174266 A JP55174266 A JP 55174266A JP 17426680 A JP17426680 A JP 17426680A JP S5797711 A JPS5797711 A JP S5797711A
Authority
JP
Japan
Prior art keywords
wave
pwm
input signal
dsb
switching
Prior art date
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
JP55174266A
Other languages
Japanese (ja)
Inventor
Atsushi Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55174266A priority Critical patent/JPS5797711A/en
Publication of JPS5797711A publication Critical patent/JPS5797711A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE: To obtain desired PWM.DSB waves, by obtaining PWM full-wave rectified waves, which have a pulse width corresponding to amplification of an input signal, from the input signal and controlling the switching by signals, which are obtained by dividing these obtained waves into two and inverting their phases alternately.
CONSTITUTION: When an input signal exists, the input signal and a saw-tooth wave (clock) are compared in every positive and negative half cycle of the input signal by operational amplifiers OP1 and OP2 and are synthesized by an OR circuit OR1 to obtain a PWM wave having a pulse width corresponding to the amplitude (momentary value) of the input signal. This PWM wave is divided into two in a switching control signal generating part 13, which generates a control signal for conversion of the PWM wave to a DSB wave, by a rectangular wave (clock) signal, and in this case, phases of divided outputs are inverted by the output from a zero cross detector ZD. By the switching control of switching transistors Q1 and Q2 of a switching part 16, a PWM.DSB wave is obtained in the secondary side of a transformer T11.
COPYRIGHT: (C)1982,JPO&Japio
JP55174266A 1980-12-10 1980-12-10 Pwm-dsb wave generating circuit Pending JPS5797711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55174266A JPS5797711A (en) 1980-12-10 1980-12-10 Pwm-dsb wave generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55174266A JPS5797711A (en) 1980-12-10 1980-12-10 Pwm-dsb wave generating circuit

Publications (1)

Publication Number Publication Date
JPS5797711A true JPS5797711A (en) 1982-06-17

Family

ID=15975633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55174266A Pending JPS5797711A (en) 1980-12-10 1980-12-10 Pwm-dsb wave generating circuit

Country Status (1)

Country Link
JP (1) JPS5797711A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994021036A1 (en) * 1993-03-02 1994-09-15 Kirn Larry J Switching amplifier with impedance transformation output stage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994021036A1 (en) * 1993-03-02 1994-09-15 Kirn Larry J Switching amplifier with impedance transformation output stage

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