JPS54154066A - Constant-voltage power supply circuit - Google Patents
Constant-voltage power supply circuitInfo
- Publication number
- JPS54154066A JPS54154066A JP6235578A JP6235578A JPS54154066A JP S54154066 A JPS54154066 A JP S54154066A JP 6235578 A JP6235578 A JP 6235578A JP 6235578 A JP6235578 A JP 6235578A JP S54154066 A JPS54154066 A JP S54154066A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- error
- voltage
- amplifier
- constant
- 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
Links
Abstract
PURPOSE: To obtain a constant-voltage power supply circuit adpated for integrating with low power consumption by constructing an error difference amplifier circuit with differential amplifier.
CONSTITUTION: The standard voltage Vref from a standard voltage circuit is compared with an output voltage Vout by an error amplifier 3 to control so that the error voltage of the error amplifier becomes zero. The error amplifier consists of a differential amplifier of two transistors. The standard voltage is applied to the first transistor Q1, and the output terminal 2 of the second transistor Q2 is connected to the first transistor Q1 so that the saturated current of the transistor Q2 becomes n times that of the first transistor Q1 and that the current amplification factors of the current inverters I1, I2 connected to the transistors Q1, Q2 be n times so as to thereby reduce the power consumption.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6235578A JPS54154066A (en) | 1978-05-26 | 1978-05-26 | Constant-voltage power supply circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6235578A JPS54154066A (en) | 1978-05-26 | 1978-05-26 | Constant-voltage power supply circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54154066A true JPS54154066A (en) | 1979-12-04 |
Family
ID=13197716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6235578A Pending JPS54154066A (en) | 1978-05-26 | 1978-05-26 | Constant-voltage power supply circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54154066A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS607695A (en) * | 1983-06-27 | 1985-01-16 | Toshiba Corp | Semiconductor integrated circuit |
JPS61190617A (en) * | 1985-02-20 | 1986-08-25 | Hitachi Micro Comput Eng Ltd | Constant voltage circuit |
KR100763328B1 (en) | 2005-01-26 | 2007-10-05 | 가부시키가이샤 리코 | Constant voltage circuit and semiconductor device including the constant voltage circuit |
-
1978
- 1978-05-26 JP JP6235578A patent/JPS54154066A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS607695A (en) * | 1983-06-27 | 1985-01-16 | Toshiba Corp | Semiconductor integrated circuit |
JPS61190617A (en) * | 1985-02-20 | 1986-08-25 | Hitachi Micro Comput Eng Ltd | Constant voltage circuit |
JPH0673091B2 (en) * | 1985-02-20 | 1994-09-14 | 株式会社日立マイコンシステム | Constant voltage circuit |
KR100763328B1 (en) | 2005-01-26 | 2007-10-05 | 가부시키가이샤 리코 | Constant voltage circuit and semiconductor device including the constant voltage circuit |
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