JPS5663617A - Low stand-by low-loss constant-voltage electric power supply - Google Patents

Low stand-by low-loss constant-voltage electric power supply

Info

Publication number
JPS5663617A
JPS5663617A JP2877680A JP2877680A JPS5663617A JP S5663617 A JPS5663617 A JP S5663617A JP 2877680 A JP2877680 A JP 2877680A JP 2877680 A JP2877680 A JP 2877680A JP S5663617 A JPS5663617 A JP S5663617A
Authority
JP
Japan
Prior art keywords
voltage
current
low
transistor
stand
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
JP2877680A
Other languages
Japanese (ja)
Other versions
JPH0217803B2 (en
Inventor
Yuji Sato
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2877680A priority Critical patent/JPS5663617A/en
Publication of JPS5663617A publication Critical patent/JPS5663617A/en
Publication of JPH0217803B2 publication Critical patent/JPH0217803B2/ja
Granted legal-status Critical Current

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

Abstract

PURPOSE: To obtain a constant-voltage output of low voltage which is small in not only stand-by current but also loss voltage, by using the diode connection of the transistor, and also compensating the temperature characteristic by the temperature characteristic of the field effect transistor.
CONSTITUTION: When the input voltage Vi becomes high, the voltage of noninverted input + of the error amplifier DA becomes higher than the voltage of inverted input -, a drive current Ib of the transistor Tr2 decreases, a load current Ie decreases, and the output voltage Vo is kept constant. Also, even in case when the load current Ie is varied by a variation of the load L, the output voltage Vo is kept constant in the same way. In case when temperature has been varied, a current of the field effect transistor FET is made small, it is operated in the area where the temperature coefficient is positive, the negative temperature coefficient of the transistor Tr1 is negated by the positive temperature coefficient of the field effect transistor FET, and the output voltage having no variation is obtained. Also, since the transistor Tr2 is driven by the output of the error amplifier DA, the stand-by current at the time of no-load is very small.
COPYRIGHT: (C)1981,JPO&Japio
JP2877680A 1980-03-06 1980-03-06 Low stand-by low-loss constant-voltage electric power supply Granted JPS5663617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2877680A JPS5663617A (en) 1980-03-06 1980-03-06 Low stand-by low-loss constant-voltage electric power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2877680A JPS5663617A (en) 1980-03-06 1980-03-06 Low stand-by low-loss constant-voltage electric power supply

Publications (2)

Publication Number Publication Date
JPS5663617A true JPS5663617A (en) 1981-05-30
JPH0217803B2 JPH0217803B2 (en) 1990-04-23

Family

ID=12257799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2877680A Granted JPS5663617A (en) 1980-03-06 1980-03-06 Low stand-by low-loss constant-voltage electric power supply

Country Status (1)

Country Link
JP (1) JPS5663617A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58154019A (en) * 1982-03-08 1983-09-13 Nec Corp Series regulator
JPS59135520A (en) * 1983-01-25 1984-08-03 Seiko Epson Corp Constant voltage circuit
JP2016143117A (en) * 2015-01-30 2016-08-08 ラピスセミコンダクタ株式会社 Constant-voltage device and reference voltage generating circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119955A (en) * 1974-03-11 1975-09-19
JPS52133550A (en) * 1976-04-30 1977-11-09 Takeyasu Isaburou Low stand by low loss constant voltage power supply

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119955A (en) * 1974-03-11 1975-09-19
JPS52133550A (en) * 1976-04-30 1977-11-09 Takeyasu Isaburou Low stand by low loss constant voltage power supply

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58154019A (en) * 1982-03-08 1983-09-13 Nec Corp Series regulator
JPS59135520A (en) * 1983-01-25 1984-08-03 Seiko Epson Corp Constant voltage circuit
JPH0618012B2 (en) * 1983-01-25 1994-03-09 セイコーエプソン株式会社 Constant voltage circuit
JP2016143117A (en) * 2015-01-30 2016-08-08 ラピスセミコンダクタ株式会社 Constant-voltage device and reference voltage generating circuit

Also Published As

Publication number Publication date
JPH0217803B2 (en) 1990-04-23

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