JPS6471322A - Pulse width modulator - Google Patents

Pulse width modulator

Info

Publication number
JPS6471322A
JPS6471322A JP22933687A JP22933687A JPS6471322A JP S6471322 A JPS6471322 A JP S6471322A JP 22933687 A JP22933687 A JP 22933687A JP 22933687 A JP22933687 A JP 22933687A JP S6471322 A JPS6471322 A JP S6471322A
Authority
JP
Japan
Prior art keywords
counter
output
pwm
initial value
setting value
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
JP22933687A
Other languages
Japanese (ja)
Other versions
JPH0758891B2 (en
Inventor
Shigeo Mizugaki
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 JP22933687A priority Critical patent/JPH0758891B2/en
Publication of JPS6471322A publication Critical patent/JPS6471322A/en
Publication of JPH0758891B2 publication Critical patent/JPH0758891B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To obtain a DC output by the control of a PWM output, by providing a function deciding whether or not the next setting value is zero before the count of the next PWM period is started when a counter with a reload register reaches terminal count. CONSTITUTION:It is assumed that the terminal count of counters 15, 16 is at 1 and the initial value of the counter 15 is 2, the next setting value is 0, the initial value of the counter 16 is 3 and the next setting value is 0. The counter 15 is counted down from the initial value (=2) and the output of the PWM(pulse width modulator) 7 is zero. When the counter 15 reaches a terminal count, the level of output 7 changes from 0 to 1, the counter 16 is counted down from the initial value (=3) and outputs a signal 5 in reaching the terminal count and the next setting value is preloaded to the counter 20 by the reload resister 9 to decide whether or not it is zero. The control section 19 controls it depending on the decision of the result so that the next PWM operating period is a DC output.
JP22933687A 1987-09-11 1987-09-11 Pulse width modulator Expired - Fee Related JPH0758891B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22933687A JPH0758891B2 (en) 1987-09-11 1987-09-11 Pulse width modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22933687A JPH0758891B2 (en) 1987-09-11 1987-09-11 Pulse width modulator

Publications (2)

Publication Number Publication Date
JPS6471322A true JPS6471322A (en) 1989-03-16
JPH0758891B2 JPH0758891B2 (en) 1995-06-21

Family

ID=16890560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22933687A Expired - Fee Related JPH0758891B2 (en) 1987-09-11 1987-09-11 Pulse width modulator

Country Status (1)

Country Link
JP (1) JPH0758891B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010113063A (en) * 2000-06-16 2001-12-28 이형도 Device for combine reel in deck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010113063A (en) * 2000-06-16 2001-12-28 이형도 Device for combine reel in deck

Also Published As

Publication number Publication date
JPH0758891B2 (en) 1995-06-21

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Legal Events

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