JPS5754871A - Full-wave rectification circuit - Google Patents
Full-wave rectification circuitInfo
- Publication number
- JPS5754871A JPS5754871A JP55131058A JP13105880A JPS5754871A JP S5754871 A JPS5754871 A JP S5754871A JP 55131058 A JP55131058 A JP 55131058A JP 13105880 A JP13105880 A JP 13105880A JP S5754871 A JPS5754871 A JP S5754871A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- output terminal
- positive
- operation amplifier
- 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
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/22—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of ac into dc
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To make it possible to eliminate voltage variation owing to change in temperature, etc., while reducing power consumption and to reduce the size of a circuit as a whole, by incorporating operation amplifier. CONSTITUTION:When a secondary side voltage V2 of a voltage transformer 1 is a positive half wave, potential of an output terminal (d) of an operation amplifier 22 is saturated in negative direction, and a diode 24 becomes OFF. On the other hand, an output terminal (b) of an operation amplifier 21 is deflected in positive direction and a diode 23 is biased in forward direction, and potentials at points (a) and (c) become equal to each other. And, when the secondary side voltage V2 is a negative half wave, the output terminal (d) is deflected in positive direction, a current i2 is fed back to point (a) through a resistor 27, and a positive voltage of an equal absolute value is impressed on a filter circuit 3. And, as an output voltage of the filter circuit 3 is compared with reference voltage of a voltage comparing circuit 4, if it proved to be higher than the reference voltage, a relay 6 is actuated through a power amplifying circuit 5. It is possible, by doing so, to lower the comparative voltage and also to reduce power consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55131058A JPS5754871A (en) | 1980-09-20 | 1980-09-20 | Full-wave rectification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55131058A JPS5754871A (en) | 1980-09-20 | 1980-09-20 | Full-wave rectification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5754871A true JPS5754871A (en) | 1982-04-01 |
Family
ID=15049019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55131058A Pending JPS5754871A (en) | 1980-09-20 | 1980-09-20 | Full-wave rectification circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5754871A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159616A (en) * | 1983-02-28 | 1984-09-10 | 松下電工株式会社 | Overcurrent detector |
| CN103760409A (en) * | 2013-11-29 | 2014-04-30 | 宁波南车时代传感技术有限公司 | Voltage transducer |
-
1980
- 1980-09-20 JP JP55131058A patent/JPS5754871A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159616A (en) * | 1983-02-28 | 1984-09-10 | 松下電工株式会社 | Overcurrent detector |
| CN103760409A (en) * | 2013-11-29 | 2014-04-30 | 宁波南车时代传感技术有限公司 | Voltage transducer |
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