JPS5480783A - Voltage detecting circuit - Google Patents

Voltage detecting circuit

Info

Publication number
JPS5480783A
JPS5480783A JP14844677A JP14844677A JPS5480783A JP S5480783 A JPS5480783 A JP S5480783A JP 14844677 A JP14844677 A JP 14844677A JP 14844677 A JP14844677 A JP 14844677A JP S5480783 A JPS5480783 A JP S5480783A
Authority
JP
Japan
Prior art keywords
level
circuit
voltage dividing
operating
dividing circuit
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
JP14844677A
Other languages
Japanese (ja)
Other versions
JPS5754748B2 (en
Inventor
Masayuki Yasui
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP14844677A priority Critical patent/JPS5480783A/en
Publication of JPS5480783A publication Critical patent/JPS5480783A/en
Publication of JPS5754748B2 publication Critical patent/JPS5754748B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To prevent the chattering, even if an operating level and a return level are erroneously set, by providing a resistive voltage dividing circuit for determining an operating level, a resistive voltage dividing circuit for determining a return level and a Schmidt circuit thereby to detect the fluctuations in a main voltage.
CONSTITUTION: A schmidt circuit is composed of transistors 51 and 53, and a drive circuit for driving a relay 95 is constructed of a transistor 54. The operating level is preset by a resistive voltage dividing circuit composed of resistors 71, 72 and 74, and the return level is preset by a resistive voltage dividing circuit composed of resistors 79, 80 and 73. The contact of the realy 95 is used only for extracting output signals so that it can be free from contact deterioration. Even if the return level is erroneously preset higher than the operating level, no feedback current is supplied to the base of the transistor 51, when the main voltage becomes higher than the operating, level, so that the feedback current is fed through a resistor 86. No trouble takes place in the operations as a Schmidt circuit thereby to prevent the chattering.
COPYRIGHT: (C)1979,JPO&Japio
JP14844677A 1977-12-09 1977-12-09 Voltage detecting circuit Granted JPS5480783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14844677A JPS5480783A (en) 1977-12-09 1977-12-09 Voltage detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14844677A JPS5480783A (en) 1977-12-09 1977-12-09 Voltage detecting circuit

Publications (2)

Publication Number Publication Date
JPS5480783A true JPS5480783A (en) 1979-06-27
JPS5754748B2 JPS5754748B2 (en) 1982-11-19

Family

ID=15452969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14844677A Granted JPS5480783A (en) 1977-12-09 1977-12-09 Voltage detecting circuit

Country Status (1)

Country Link
JP (1) JPS5480783A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60110091U (en) * 1983-12-28 1985-07-26 株式会社　昭和製作所 front fork

Also Published As

Publication number Publication date
JPS5754748B2 (en) 1982-11-19

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