JPS6421515A - Regulated power supply circuit for selective call receiver or the like - Google Patents
Regulated power supply circuit for selective call receiver or the likeInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011138192A (en) * | 2009-12-25 | 2011-07-14 | Samsung Electronics Co Ltd | Power supply circuit |
-
1987
- 1987-07-15 JP JP17764987A patent/JP2643157B2/en not_active Expired - Lifetime
Cited By (1)
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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