JPS5482196A - Lamp display circuit - Google Patents

Lamp display circuit

Info

Publication number
JPS5482196A
JPS5482196A JP15028677A JP15028677A JPS5482196A JP S5482196 A JPS5482196 A JP S5482196A JP 15028677 A JP15028677 A JP 15028677A JP 15028677 A JP15028677 A JP 15028677A JP S5482196 A JPS5482196 A JP S5482196A
Authority
JP
Japan
Prior art keywords
lamp
check signal
contact
current
voltage
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
JP15028677A
Other languages
Japanese (ja)
Inventor
Takayoshi Iwamoto
Tokuo Ito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15028677A priority Critical patent/JPS5482196A/en
Publication of JPS5482196A publication Critical patent/JPS5482196A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Audible And Visible Signals (AREA)

Abstract

PURPOSE: To make it possible to check a lamp and current limiter with no need of a lamp test gate by switching a power voltage on the basis of a lamp check signal.
CONSTITUTION: Change-over circuit 8 is connected to terminal 1F of display lamp 1, and at an unchecking time, current I1 flows from power supply 5 by way of normally make contact 9b, lamp 1, protective resistance 2 and lighting circuit 3 by check signal S1, thereby lighting lamp 1. At a checking time, on the other hand, lamp check signal S2 operates exciting coil 9c of change-over circuit 8, contact 9b is changed over to normally break contact 9a to apply a hihg voltage, from power supplies 5 and 10 connected in series, to terminal 1F, and constantvoltage element 6 is caused to conduct to flow current I3, so that both lamp 1 and constant voltage element 6 will be checked at the same time.
COPYRIGHT: (C)1979,JPO&Japio
JP15028677A 1977-12-14 1977-12-14 Lamp display circuit Pending JPS5482196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15028677A JPS5482196A (en) 1977-12-14 1977-12-14 Lamp display circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15028677A JPS5482196A (en) 1977-12-14 1977-12-14 Lamp display circuit

Publications (1)

Publication Number Publication Date
JPS5482196A true JPS5482196A (en) 1979-06-30

Family

ID=15493649

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15028677A Pending JPS5482196A (en) 1977-12-14 1977-12-14 Lamp display circuit

Country Status (1)

Country Link
JP (1) JPS5482196A (en)

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