JPS5717033A - Voltage stabilizing circuit - Google Patents
Voltage stabilizing circuitInfo
- Publication number
- JPS5717033A JPS5717033A JP9197980A JP9197980A JPS5717033A JP S5717033 A JPS5717033 A JP S5717033A JP 9197980 A JP9197980 A JP 9197980A JP 9197980 A JP9197980 A JP 9197980A JP S5717033 A JPS5717033 A JP S5717033A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- diode
- load
- circuit
- base
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
- G05F1/573—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
PURPOSE:To protect a control transistor from the breakdown due to an overcurrent, by providing a diode between the load and the reference voltage with the polarity in the direction where the reference voltage receives a short circuit when a short circuit is caused to the load of a series type transistor voltage stabilizing circuit. CONSTITUTION:The output of a DC power source 1 is supplied to a load 2 via a control transistor (TR) 4. The output voltage detected by resistances 7 and 8 is compared with the reference voltage of a constant voltage diode 3 through a differential amplifying circuit 5 and then fed negatively back to the base of the TR4 to stabilize the output voltage. Furthermore, a diode 9 is connected between the collector of the TR4 and the base of TR52 of the circuit 5. In such constitution, the cathode of the diode 9 is earthed if the load 2 is mistakenly short-circuited. Thus the base voltage of the TR52 is fixed to the forward voltage of the diode 9 to cut off the TR52. As a result, the TR4 is also cut off to prevent previously the flowing of overcurrent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9197980A JPS5717033A (en) | 1980-07-02 | 1980-07-02 | Voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9197980A JPS5717033A (en) | 1980-07-02 | 1980-07-02 | Voltage stabilizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5717033A true JPS5717033A (en) | 1982-01-28 |
Family
ID=14041612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9197980A Pending JPS5717033A (en) | 1980-07-02 | 1980-07-02 | Voltage stabilizing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5717033A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006039812A (en) * | 2004-07-26 | 2006-02-09 | Nec Electronics Corp | Dc stabilized power supply circuit |
| DE102017123088A1 (en) | 2016-10-07 | 2018-04-12 | Fanuc Corporation | A work support system comprising a machine learning unit |
-
1980
- 1980-07-02 JP JP9197980A patent/JPS5717033A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006039812A (en) * | 2004-07-26 | 2006-02-09 | Nec Electronics Corp | Dc stabilized power supply circuit |
| JP4550506B2 (en) * | 2004-07-26 | 2010-09-22 | ルネサスエレクトロニクス株式会社 | DC stabilized power supply circuit |
| DE102017123088A1 (en) | 2016-10-07 | 2018-04-12 | Fanuc Corporation | A work support system comprising a machine learning unit |
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