JPH02126309A - Direct current feeding circuit - Google Patents

Direct current feeding circuit

Info

Publication number
JPH02126309A
JPH02126309A JP27995288A JP27995288A JPH02126309A JP H02126309 A JPH02126309 A JP H02126309A JP 27995288 A JP27995288 A JP 27995288A JP 27995288 A JP27995288 A JP 27995288A JP H02126309 A JPH02126309 A JP H02126309A
Authority
JP
Japan
Prior art keywords
current
feeding
flow
source
trq
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
JP27995288A
Other languages
Japanese (ja)
Other versions
JPH065494B2 (en
Inventor
Yasunobu Inabe
Tadakatsu Kimura
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP27995288A priority Critical patent/JPH065494B2/en
Publication of JPH02126309A publication Critical patent/JPH02126309A/en
Publication of JPH065494B2 publication Critical patent/JPH065494B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To specially minimize an energy consumption at the time of non- feeding the direct current power source to a load by connecting the base of a transistor provided by prescribed connection through a switch for feeding to a constant current source.
CONSTITUTION: A transistor (Tr)Q is connected between the connecting middle point of an output edge (a) and a resistance R of a current mirror circuit M1 and a direct current voltage source E, and the base is connected through a prescribed switch S for feeding to a constant current source H. In such constitution, while a load L is connected to an output terminal T, the switch S is controlled to turning on, then, the TrQ is turned on while the current from the current source H through the base flows. For this reason, even when the current flows through the terminal T and the resistance R to the circuit M1, the current by-passes through the TrQ, the current does not flow at the circuit M1, and thus, the current also does not flow at current mirror circuits M2 and M3 and a current flow power source non-feeding condition to a load L is obtained. At this time, when when other current flows at the TrQ, the current does not flow at circuits M1 to M3 and the power consumption becomes smaller.
COPYRIGHT: (C)1990,JPO&Japio
JP27995288A 1988-11-05 1988-11-05 DC power supply circuit Expired - Fee Related JPH065494B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27995288A JPH065494B2 (en) 1988-11-05 1988-11-05 DC power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27995288A JPH065494B2 (en) 1988-11-05 1988-11-05 DC power supply circuit

Publications (2)

Publication Number Publication Date
JPH02126309A true JPH02126309A (en) 1990-05-15
JPH065494B2 JPH065494B2 (en) 1994-01-19

Family

ID=17618212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27995288A Expired - Fee Related JPH065494B2 (en) 1988-11-05 1988-11-05 DC power supply circuit

Country Status (1)

Country Link
JP (1) JPH065494B2 (en)

Also Published As

Publication number Publication date
JPH065494B2 (en) 1994-01-19

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees