JPS5614959A - Power-factor detection circuit - Google Patents
Power-factor detection circuitInfo
- Publication number
- JPS5614959A JPS5614959A JP9246479A JP9246479A JPS5614959A JP S5614959 A JPS5614959 A JP S5614959A JP 9246479 A JP9246479 A JP 9246479A JP 9246479 A JP9246479 A JP 9246479A JP S5614959 A JPS5614959 A JP S5614959A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- synthesis
- synthesis circuit
- power
- 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
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To enable accurate detection through a simple circuit, by applying a rectified voltage signal and a logical level current signal to a divider circuit through a synthesis circuit.
CONSTITUTION: The voltage signal 1a is half-wave-rectified by a half wave rectifier circuit 1 to supply a signal 1b to a synthesis circuit 3 and a smoothing circuit 4 consisting of an integration circuit. A logical level signal 2b produced by changing a current signal 2a through a wave shaping circuit 2 is also supplied to the synthesis circuit 3. In the synthesis circuit, the polarity of the signal 1b is inverted depending on the signal 2b and synthesis is effected. The output of the synthesis circuit is applied together with that of the smoothing circuit 4 to a divider circuit 5 to produce a power-factor detection signal 5a. The synthesis circuit 3 comprises analogue gate circuits 6, 7, an inverter 8 and an operational amplifier 9. This results in enabling detection more accurate than that based on polygonal line approximation.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9246479A JPS5614959A (en) | 1979-07-18 | 1979-07-18 | Power-factor detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9246479A JPS5614959A (en) | 1979-07-18 | 1979-07-18 | Power-factor detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5614959A true JPS5614959A (en) | 1981-02-13 |
Family
ID=14055060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9246479A Pending JPS5614959A (en) | 1979-07-18 | 1979-07-18 | Power-factor detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5614959A (en) |
-
1979
- 1979-07-18 JP JP9246479A patent/JPS5614959A/en active Pending
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