JPS5644917A - Constant-voltage circuit - Google Patents
Constant-voltage circuitInfo
- Publication number
- JPS5644917A JPS5644917A JP12138479A JP12138479A JPS5644917A JP S5644917 A JPS5644917 A JP S5644917A JP 12138479 A JP12138479 A JP 12138479A JP 12138479 A JP12138479 A JP 12138479A JP S5644917 A JPS5644917 A JP S5644917A
- Authority
- JP
- Japan
- Prior art keywords
- drain
- mosfet
- voltage
- power source
- gate
- 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 which can be varied by the gate voltage, by connecting, the drain of the MOSFET to the power source through a resistance and by applying such voltage to the gate that the circuit between the source and the drain is broken down.
CONSTITUTION: The source of MOSFET Q is grounded, and resistance RL is connected between the drain and power source terminal VD, and bias power source VGS is applied to the gate. The dielectric strength between the source and the drain of MOSFET Q is determined by the value of gate bias power source VGS, and a voltage equal to this dielectric strength is obtained at output terminal VOUT connected to the drain of MOSFET Q. This voltage can be varied by gate bias power source VGS. The circuit between the source and the drain of MOSFET Q becomes a very small impedance when it is broken down, and thus, a constant voltage can be obtained independently of the connected load.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12138479A JPS5644917A (en) | 1979-09-20 | 1979-09-20 | Constant-voltage circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12138479A JPS5644917A (en) | 1979-09-20 | 1979-09-20 | Constant-voltage circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5644917A true JPS5644917A (en) | 1981-04-24 |
Family
ID=14809865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12138479A Pending JPS5644917A (en) | 1979-09-20 | 1979-09-20 | Constant-voltage circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5644917A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4499416A (en) * | 1981-11-25 | 1985-02-12 | Tokyo Shibaura Denki Kabushiki Kaisha | Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage |
US4642552A (en) * | 1985-03-04 | 1987-02-10 | Hitachi, Ltd. | Stabilized current source circuit |
-
1979
- 1979-09-20 JP JP12138479A patent/JPS5644917A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4499416A (en) * | 1981-11-25 | 1985-02-12 | Tokyo Shibaura Denki Kabushiki Kaisha | Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage |
US4642552A (en) * | 1985-03-04 | 1987-02-10 | Hitachi, Ltd. | Stabilized current source circuit |
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