JPS6421515A - Regulated power supply circuit for selective call receiver or the like - Google Patents

Regulated power supply circuit for selective call receiver or the like

Info

Publication number
JPS6421515A
JPS6421515A JP17764987A JP17764987A JPS6421515A JP S6421515 A JPS6421515 A JP S6421515A JP 17764987 A JP17764987 A JP 17764987A JP 17764987 A JP17764987 A JP 17764987A JP S6421515 A JPS6421515 A JP S6421515A
Authority
JP
Japan
Prior art keywords
power supply
differential amplifier
circuit
output
regulated power
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
JP17764987A
Other languages
Japanese (ja)
Other versions
JP2643157B2 (en
Inventor
Yoichiro Minami
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP17764987A priority Critical patent/JP2643157B2/en
Publication of JPS6421515A publication Critical patent/JPS6421515A/en
Application granted granted Critical
Publication of JP2643157B2 publication Critical patent/JP2643157B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To prevent an output voltage from being reduced by providing the titled circuit with a 2nd differential amplifier circuit and a control circuit for receiving the output of the 2nd differential amplifier circuit and controlling the current source of a 1st differential amplifier circuit. CONSTITUTION:The titled circuit has basic constitution consisting of two stages of amplifiers consisting of the 1st differential amplifier constituted of a reference power supply 11, a power supply 13 and TRs Q10-Q13 and a TR Q14 whose emitter is earthed, the 2nd differential amplifier constituted of TRs Q16-Q19 and a TR 15. An error voltage from a reference voltage VREF obtained from the reference power supply 11 is detected also by the 2nd differential amplifier and the amplified error voltage output is fed back to the TR Q14 to control circuit IEE flowing into the TR Q14. Even if the number of amplifier stages is small, a regulated power supply having high regulation can be obtained and the reduction of an output voltage which may be generated when load current is increased can be suppressed.
JP17764987A 1987-07-15 1987-07-15 Stabilized power supply circuit such as selective call receiver Expired - Lifetime JP2643157B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17764987A JP2643157B2 (en) 1987-07-15 1987-07-15 Stabilized power supply circuit such as selective call receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17764987A JP2643157B2 (en) 1987-07-15 1987-07-15 Stabilized power supply circuit such as selective call receiver

Publications (2)

Publication Number Publication Date
JPS6421515A true JPS6421515A (en) 1989-01-24
JP2643157B2 JP2643157B2 (en) 1997-08-20

Family

ID=16034685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17764987A Expired - Lifetime JP2643157B2 (en) 1987-07-15 1987-07-15 Stabilized power supply circuit such as selective call receiver

Country Status (1)

Country Link
JP (1) JP2643157B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011138192A (en) * 2009-12-25 2011-07-14 Samsung Electronics Co Ltd Power supply circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011138192A (en) * 2009-12-25 2011-07-14 Samsung Electronics Co Ltd Power supply circuit

Also Published As

Publication number Publication date
JP2643157B2 (en) 1997-08-20

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