JPS55128158A - Electric-current detector - Google Patents

Electric-current detector

Info

Publication number
JPS55128158A
JPS55128158A JP3544579A JP3544579A JPS55128158A JP S55128158 A JPS55128158 A JP S55128158A JP 3544579 A JP3544579 A JP 3544579A JP 3544579 A JP3544579 A JP 3544579A JP S55128158 A JPS55128158 A JP S55128158A
Authority
JP
Japan
Prior art keywords
linear
circuit
current
voltage drop
output
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
JP3544579A
Other languages
Japanese (ja)
Other versions
JPH0240992B2 (en
Inventor
Kinji Sugimoto
Takayuki Kashima
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.)
Via Mechanics Ltd
Original Assignee
Hitachi Seiko 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 Seiko Ltd filed Critical Hitachi Seiko Ltd
Priority to JP3544579A priority Critical patent/JPS55128158A/en
Publication of JPS55128158A publication Critical patent/JPS55128158A/en
Publication of JPH0240992B2 publication Critical patent/JPH0240992B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE: To detect conduction to a conduction cable and its current value, by combining linear and non-linear detecting signals which are generated between the terminals of linear and non-linear resistors after providing these resistors to a current detector body connected to the conduction cable.
CONSTITUTION: Output from a current signal converting circuit 22, to which output from an current detecting body 2 is supplied, is fed to an output unit 5 and an error amplifier 8. The circuit 22 consists of a converter circuit 15, a linear resistor 23 connected to an output terminal of the circuit 15, and non-linear resistors 16 composed of diodes. The voltage drop e2 of the diodes 16 does not change and is approximately kept constant owing to a non-linear property of the resistance thereof even when circuit currents I increase. The voltage drop e2 results in high sensitivity as signals for use in detecting the flowing of the circuit current I, and forms stable output voltage. The sum e3 of voltage drop e4 of the resistor 23 and the voltage drop e2 froms a broken line, but has approximately primary functional relation with respect to currents I in each region. Thus, analog signals (for feedback) and digital signals (for current detection) can be obtained according to the combination of the resistor 23 and the diodes 16.
COPYRIGHT: (C)1980,JPO&Japio
JP3544579A 1979-03-28 1979-03-28 Electric-current detector Granted JPS55128158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3544579A JPS55128158A (en) 1979-03-28 1979-03-28 Electric-current detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3544579A JPS55128158A (en) 1979-03-28 1979-03-28 Electric-current detector

Publications (2)

Publication Number Publication Date
JPS55128158A true JPS55128158A (en) 1980-10-03
JPH0240992B2 JPH0240992B2 (en) 1990-09-14

Family

ID=12442020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3544579A Granted JPS55128158A (en) 1979-03-28 1979-03-28 Electric-current detector

Country Status (1)

Country Link
JP (1) JPS55128158A (en)

Also Published As

Publication number Publication date
JPH0240992B2 (en) 1990-09-14

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