JPS56122523A - Pulse width modulating circuit - Google Patents

Pulse width modulating circuit

Info

Publication number
JPS56122523A
JPS56122523A JP2705680A JP2705680A JPS56122523A JP S56122523 A JPS56122523 A JP S56122523A JP 2705680 A JP2705680 A JP 2705680A JP 2705680 A JP2705680 A JP 2705680A JP S56122523 A JPS56122523 A JP S56122523A
Authority
JP
Japan
Prior art keywords
circuit
voltage
comparator
diodes
resistance
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
JP2705680A
Other languages
Japanese (ja)
Inventor
Kenzo Akamatsu
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2705680A priority Critical patent/JPS56122523A/en
Publication of JPS56122523A publication Critical patent/JPS56122523A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Abstract

PURPOSE:To obtain the captioned circuit having high accuracy by adding a simple temperature compensating circuit consisting of resistance and diodes. CONSTITUTION:The circuit which is constituted of a bridge consisting of diodes D3-D6, and the Zener diode Z3 generates the voltage of Es in the output 4 of this circuit through the route of R5--D3-Z3-D4 when the comparator OP2 is high. When the comparator OP2 is low, the voltage of -Es is generated in the output 4 of the this circuit through the route of D5-Z3-D6-R5. The resistance R6, the diodes D1, D2 and D1', D2' constitute a temperature compensating circuit, and when the comparator OP2 is high, D1 is turned on, the positive voltage Es' is generated, and when the comparator OP2 is low, D2 is turned on and the negative voltage -Es' is generated. The resistance R7 and R8 supply the voltage Es' and -Es' to both the integrating circuit OP1 and the comparator OP2, respectively, and are connected so that the polarity becomes opposite to the voltage Es and -Es of the otput 4.
JP2705680A 1980-03-03 1980-03-03 Pulse width modulating circuit Pending JPS56122523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2705680A JPS56122523A (en) 1980-03-03 1980-03-03 Pulse width modulating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2705680A JPS56122523A (en) 1980-03-03 1980-03-03 Pulse width modulating circuit

Publications (1)

Publication Number Publication Date
JPS56122523A true JPS56122523A (en) 1981-09-26

Family

ID=12210406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2705680A Pending JPS56122523A (en) 1980-03-03 1980-03-03 Pulse width modulating circuit

Country Status (1)

Country Link
JP (1) JPS56122523A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052731U (en) * 1983-09-19 1985-04-13 昌栄電機株式会社 pulse modulation circuit
JPS6066122U (en) * 1983-10-14 1985-05-10 株式会社チノ− oscillation circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052731U (en) * 1983-09-19 1985-04-13 昌栄電機株式会社 pulse modulation circuit
JPS6066122U (en) * 1983-10-14 1985-05-10 株式会社チノ− oscillation circuit

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