JPS57130127A - Load driving circuit - Google Patents

Load driving circuit

Info

Publication number
JPS57130127A
JPS57130127A JP56014098A JP1409881A JPS57130127A JP S57130127 A JPS57130127 A JP S57130127A JP 56014098 A JP56014098 A JP 56014098A JP 1409881 A JP1409881 A JP 1409881A JP S57130127 A JPS57130127 A JP S57130127A
Authority
JP
Japan
Prior art keywords
signal
comparator
pulse width
motor
speed
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.)
Granted
Application number
JP56014098A
Other languages
Japanese (ja)
Other versions
JPH0328156B2 (en
Inventor
Masaaki Sakai
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP56014098A priority Critical patent/JPS57130127A/en
Publication of JPS57130127A publication Critical patent/JPS57130127A/en
Publication of JPH0328156B2 publication Critical patent/JPH0328156B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53846—Control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Control Of Electric Motors In General (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To omit a reference oscillator to use a DC amplifier and a comparator in common, by using an error signal, which is subjected to pulse width modulation, directly as a modulation signal for obtaining a signal for a power amplifier which drives a load. CONSTITUTION:When the rotation speed of a motor 15 becomes lower than a reference speed, a speed error signal S1L appearing in an input terminal 1 is converted to a signal S2L by a low pass filter 20 and is compared with a DC signal SP corresponding to a phase error signal by a comparator 8A. Turning-on/off of transistors TRs 12 and 13 is controlled by a PWM signal S3L of a long pulse width appearing in the output side of the comparator 8A, and an output signal S4L of a long pulse width is outputted to the output side of a power amplifier 11. Driving of the motor 15 is controlled by a driving signal S5L obtained by smoothing the output signal S4L, and the motor 15 is accelerated to rotate in the reference speed.
JP56014098A 1981-02-02 1981-02-02 Load driving circuit Granted JPS57130127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56014098A JPS57130127A (en) 1981-02-02 1981-02-02 Load driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56014098A JPS57130127A (en) 1981-02-02 1981-02-02 Load driving circuit

Publications (2)

Publication Number Publication Date
JPS57130127A true JPS57130127A (en) 1982-08-12
JPH0328156B2 JPH0328156B2 (en) 1991-04-18

Family

ID=11851634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56014098A Granted JPS57130127A (en) 1981-02-02 1981-02-02 Load driving circuit

Country Status (1)

Country Link
JP (1) JPS57130127A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213283A (en) * 1984-04-04 1985-10-25 Sony Corp Speed servo circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213283A (en) * 1984-04-04 1985-10-25 Sony Corp Speed servo circuit

Also Published As

Publication number Publication date
JPH0328156B2 (en) 1991-04-18

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