JPS5784619A - Pulse width extension circuit - Google Patents

Pulse width extension circuit

Info

Publication number
JPS5784619A
JPS5784619A JP16088380A JP16088380A JPS5784619A JP S5784619 A JPS5784619 A JP S5784619A JP 16088380 A JP16088380 A JP 16088380A JP 16088380 A JP16088380 A JP 16088380A JP S5784619 A JPS5784619 A JP S5784619A
Authority
JP
Japan
Prior art keywords
voltage
capacitor
resistor
terminal
power supply
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
JP16088380A
Other languages
Japanese (ja)
Other versions
JPH0157529B2 (en
Inventor
Chikao Aoki
Hiroshi Nakahama
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP16088380A priority Critical patent/JPS5784619A/en
Publication of JPS5784619A publication Critical patent/JPS5784619A/en
Publication of JPH0157529B2 publication Critical patent/JPH0157529B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/04—Shaping pulses by increasing duration; by decreasing duration

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Pulse Circuits (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To detect even a minute phase difference with a sufficient gain, by extending a minute pulse in proportion to the pulse width. CONSTITUTION:A capacitor C1 is charged with a time constant of resistor R1 and capacitor C1 through a constant voltage power supply. When an input signal is absent and a switch circuit SW is opened, the electric charge charged to the capacitor C1 starts discharge in the time constant of the capacitor C1 and resistor R2, and a voltage at a terminal 2 approaches a voltage of the constant voltage power supply VA. In this case, the time reaching the state of a voltage at terminal 2> voltage at terminal 4 is made slow by setting larger the value of the resistor R2, and the time when the output of a voltage comparison circuit COMP returns to the initial state can be extended. Further, the power supply voltage satisfies the condition of VA>VC>VB.
JP16088380A 1980-11-17 1980-11-17 Pulse width extension circuit Granted JPS5784619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16088380A JPS5784619A (en) 1980-11-17 1980-11-17 Pulse width extension circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16088380A JPS5784619A (en) 1980-11-17 1980-11-17 Pulse width extension circuit

Publications (2)

Publication Number Publication Date
JPS5784619A true JPS5784619A (en) 1982-05-27
JPH0157529B2 JPH0157529B2 (en) 1989-12-06

Family

ID=15724425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16088380A Granted JPS5784619A (en) 1980-11-17 1980-11-17 Pulse width extension circuit

Country Status (1)

Country Link
JP (1) JPS5784619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869996A (en) * 1994-09-20 1999-02-09 Mitsubishi Denki Kabushiki Kaisha Semiconductor composite element, and method of detecting abnormal conditions in an inverter device having the element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869996A (en) * 1994-09-20 1999-02-09 Mitsubishi Denki Kabushiki Kaisha Semiconductor composite element, and method of detecting abnormal conditions in an inverter device having the element

Also Published As

Publication number Publication date
JPH0157529B2 (en) 1989-12-06

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