JPS5595841A - Thermometer - Google Patents

Thermometer

Info

Publication number
JPS5595841A
JPS5595841A JP295679A JP295679A JPS5595841A JP S5595841 A JPS5595841 A JP S5595841A JP 295679 A JP295679 A JP 295679A JP 295679 A JP295679 A JP 295679A JP S5595841 A JPS5595841 A JP S5595841A
Authority
JP
Japan
Prior art keywords
temperature
trq
light emitting
output
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
JP295679A
Other languages
Japanese (ja)
Inventor
Hikari Ohashi
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.)
Renesas Eastern Japan Semiconductor Inc
Hitachi Iruma Electronic Co Ltd
Original Assignee
Hitachi Tohbu Semiconductor Ltd
Hitachi Iruma Electronic 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 Hitachi Tohbu Semiconductor Ltd, Hitachi Iruma Electronic Co Ltd filed Critical Hitachi Tohbu Semiconductor Ltd
Priority to JP295679A priority Critical patent/JPS5595841A/en
Publication of JPS5595841A publication Critical patent/JPS5595841A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To secure the temperature display with the fixed temperature interval by giving the control to transistor Tr with the output of the temperature-sensitive element and then driving the light emitting diode via the output of the Tr.
CONSTITUTION: The temperature is converted into voltage signal VS by thermistor RS and resistance R0, and signal VS is applied to TrQ1WQ3 via R1WR3. And light emitting diodes D1WD3 plus current limit resistances R4WR6 are provided to the collectors of TrQ1WQ3. Here the value of R1WR3 are set so that TrQ1WQ3 may be turned on with voltage VS1WVS3 corresponding to temperatures T1WT3 to be displayed. Thus the temperature display is ensured with the fixed temperature interval.
COPYRIGHT: (C)1980,JPO&Japio
JP295679A 1979-01-17 1979-01-17 Thermometer Pending JPS5595841A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP295679A JPS5595841A (en) 1979-01-17 1979-01-17 Thermometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP295679A JPS5595841A (en) 1979-01-17 1979-01-17 Thermometer

Publications (1)

Publication Number Publication Date
JPS5595841A true JPS5595841A (en) 1980-07-21

Family

ID=11543809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP295679A Pending JPS5595841A (en) 1979-01-17 1979-01-17 Thermometer

Country Status (1)

Country Link
JP (1) JPS5595841A (en)

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