JPS554647A - Constant voltage circuit - Google Patents
Constant voltage circuitInfo
- Publication number
- JPS554647A JPS554647A JP7758878A JP7758878A JPS554647A JP S554647 A JPS554647 A JP S554647A JP 7758878 A JP7758878 A JP 7758878A JP 7758878 A JP7758878 A JP 7758878A JP S554647 A JPS554647 A JP S554647A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- flowing
- current
- load
- 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
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
PURPOSE: To obtain a constant voltage circuit which is capable of free setting of the output voltage by installing the level shift circuit and the reference voltage generation circuit constituted by short-circuiting the source and the gate of depression MOSFET(DMOST).
CONSTITUTION: Reference voltage generation circuit 4 gives a short circuit to the gate and source of DMOST2 to produce the constant current, and then supplies the constant current to MOS load 3 to deliver potential V1 at connection point P1 of MOS2 and 3. When the potential of output terminal 9 at the connection point of constant current MOS5 and load MOS6 is changed from 0 to power voltage VSS, the current flowing through MOS5 and that flowing through MOS load 6 become as shown by curve c and d respectively. And potential V2 at intersection Q2 of curves c and d becomes the output voltage of terminal 9 in level shift circuit 7. The output voltage V2 sufficiently higher than output voltage V1 of circuit 4 is delivered from circuit 7, and at the same time current I2 flowing through MOS5 is sufficiently more in amount than current I1 flowing to MOS2. As a result, a sufficient amount of power can be supplied to the load. In the same way, voltage V3 corresponding to intersection Q3 between curves c and e can be obtained from output terminal 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7758878A JPS554647A (en) | 1978-06-27 | 1978-06-27 | Constant voltage circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7758878A JPS554647A (en) | 1978-06-27 | 1978-06-27 | Constant voltage circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS554647A true JPS554647A (en) | 1980-01-14 |
Family
ID=13638122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7758878A Pending JPS554647A (en) | 1978-06-27 | 1978-06-27 | Constant voltage circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554647A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57111618A (en) * | 1980-12-27 | 1982-07-12 | Citizen Watch Co Ltd | Constant voltage circuit |
JPS59105116A (en) * | 1982-12-07 | 1984-06-18 | Seiko Epson Corp | Constant current circuit |
JPS59111419A (en) * | 1982-12-16 | 1984-06-27 | Mitsubishi Electric Corp | Reference voltage generating circuit |
JPS61110217A (en) * | 1984-11-05 | 1986-05-28 | Nec Ic Microcomput Syst Ltd | Constant-voltage circuit |
US4616172A (en) * | 1983-12-29 | 1986-10-07 | At&T Bell Laboratories | Voltage generator for telecommunication amplifier |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5150446A (en) * | 1974-10-30 | 1976-05-04 | Hitachi Ltd | TEIDENATSU KAIRO |
JPS5359846A (en) * | 1976-11-10 | 1978-05-30 | Nec Corp | Constant voltage circuit |
-
1978
- 1978-06-27 JP JP7758878A patent/JPS554647A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5150446A (en) * | 1974-10-30 | 1976-05-04 | Hitachi Ltd | TEIDENATSU KAIRO |
JPS5359846A (en) * | 1976-11-10 | 1978-05-30 | Nec Corp | Constant voltage circuit |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57111618A (en) * | 1980-12-27 | 1982-07-12 | Citizen Watch Co Ltd | Constant voltage circuit |
JPS59105116A (en) * | 1982-12-07 | 1984-06-18 | Seiko Epson Corp | Constant current circuit |
JPH0370808B2 (en) * | 1982-12-07 | 1991-11-11 | Seiko Epson Corp | |
JPS59111419A (en) * | 1982-12-16 | 1984-06-27 | Mitsubishi Electric Corp | Reference voltage generating circuit |
JPH027088B2 (en) * | 1982-12-16 | 1990-02-15 | Mitsubishi Electric Corp | |
US4616172A (en) * | 1983-12-29 | 1986-10-07 | At&T Bell Laboratories | Voltage generator for telecommunication amplifier |
JPS61110217A (en) * | 1984-11-05 | 1986-05-28 | Nec Ic Microcomput Syst Ltd | Constant-voltage circuit |
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