JPH0212509A - Constant voltage circuit - Google Patents
Constant voltage circuitInfo
- Publication number
- JPH0212509A JPH0212509A JP16421588A JP16421588A JPH0212509A JP H0212509 A JPH0212509 A JP H0212509A JP 16421588 A JP16421588 A JP 16421588A JP 16421588 A JP16421588 A JP 16421588A JP H0212509 A JPH0212509 A JP H0212509A
- Authority
- JP
- Grant status
- Application
- Patent type
- Prior art keywords
- constant voltage
- resistor
- voltage circuit
- voltage
- diode
- 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 generate a constant voltage with a temperature coefficient zero by forming a band gap type constant voltage circuit in the inside of a MOS type IC.
CONSTITUTION: P-channel MOS transistors (1-3) whose sources are connected to a power source 12 constitute a current mirror setting the transistor 2 as a supply side. And the current density of first and second diodes 6 and 7 are set differently from each other and the difference ΔV of the voltage in a forward direction is generated between both ends of a first resistor 9, and the voltage is amplified by a second resistor 10 and the first resistor 9 by using the MOS transistors (1-3), thereby, the constant voltage circuit can be generated setting the sum of the voltage in the forward direction of the second resistor 10 and a third diode 8 as output. In such a way, it is possible to obtain the constant voltage circuit not depending on a temperature only by the MOS transistor and the diode.
COPYRIGHT: (C)1990,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16421588A JPH0212509A (en) | 1988-06-30 | 1988-06-30 | Constant voltage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16421588A JPH0212509A (en) | 1988-06-30 | 1988-06-30 | Constant voltage circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0212509A true true JPH0212509A (en) | 1990-01-17 |
Family
ID=15788855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16421588A Pending JPH0212509A (en) | 1988-06-30 | 1988-06-30 | Constant voltage circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0212509A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204724B1 (en) | 1998-03-25 | 2001-03-20 | Nec Corporation | Reference voltage generation circuit providing a stable output voltage |
| US6870421B2 (en) | 2002-03-15 | 2005-03-22 | Seiko Epson Corporation | Temperature characteristic compensation apparatus |
| JP2009199482A (en) * | 2008-02-25 | 2009-09-03 | Seiko Epson Corp | Band-gap reference circuit |
| US8100369B2 (en) | 2008-01-21 | 2012-01-24 | Erico International Corporation | I-beam seismic sway brace clamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62212713A (en) * | 1986-03-14 | 1987-09-18 | Hitachi Ltd | Mis voltage stabilizing device |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62212713A (en) * | 1986-03-14 | 1987-09-18 | Hitachi Ltd | Mis voltage stabilizing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204724B1 (en) | 1998-03-25 | 2001-03-20 | Nec Corporation | Reference voltage generation circuit providing a stable output voltage |
| US6870421B2 (en) | 2002-03-15 | 2005-03-22 | Seiko Epson Corporation | Temperature characteristic compensation apparatus |
| US8100369B2 (en) | 2008-01-21 | 2012-01-24 | Erico International Corporation | I-beam seismic sway brace clamp |
| JP2009199482A (en) * | 2008-02-25 | 2009-09-03 | Seiko Epson Corp | Band-gap reference circuit |
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