JPS61128625A - Contactless switch - Google Patents

Contactless switch

Info

Publication number
JPS61128625A
JPS61128625A JP24999384A JP24999384A JPS61128625A JP S61128625 A JPS61128625 A JP S61128625A JP 24999384 A JP24999384 A JP 24999384A JP 24999384 A JP24999384 A JP 24999384A JP S61128625 A JPS61128625 A JP S61128625A
Authority
JP
Japan
Prior art keywords
current
input
mirror
output
flow
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
JP24999384A
Other languages
Japanese (ja)
Inventor
Toshiaki Otsuka
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP24999384A priority Critical patent/JPS61128625A/en
Publication of JPS61128625A publication Critical patent/JPS61128625A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce current consumption by providing a mirror transistor (TR) provided with a current limit resistor and an input TR provided with a mirror circuit.
CONSTITUTION: Since a base current IBi of the input TR10 does not flow with an input voltage V not normally, an output TR3 is not conductive. On the other hand, when the voltage V gest higher, a current starts flowing to the output TR3 and a collector current flows to the mirror TR7, then a base current IB flows to the output TR3 via TRs 8, 9 of the current mirror circuit to flow the collector current (load current I0) of the TR3 until it is saturated sufficiently. Thus, only when the current flowing to the circuit is 0 normally and the input voltage V exists, the input current IBi and the current of the mirror circuit flow. Further, since the current of the TR9 is limited by the current limit resistor 6, it is very small.
COPYRIGHT: (C)1986,JPO&Japio
JP24999384A 1984-11-27 1984-11-27 Contactless switch Pending JPS61128625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24999384A JPS61128625A (en) 1984-11-27 1984-11-27 Contactless switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24999384A JPS61128625A (en) 1984-11-27 1984-11-27 Contactless switch

Publications (1)

Publication Number Publication Date
JPS61128625A true JPS61128625A (en) 1986-06-16

Family

ID=17201240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24999384A Pending JPS61128625A (en) 1984-11-27 1984-11-27 Contactless switch

Country Status (1)

Country Link
JP (1) JPS61128625A (en)

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