JPS5531310A - Detection circuit for phase difference fluctuation - Google Patents
Detection circuit for phase difference fluctuationInfo
- Publication number
- JPS5531310A JPS5531310A JP10404678A JP10404678A JPS5531310A JP S5531310 A JPS5531310 A JP S5531310A JP 10404678 A JP10404678 A JP 10404678A JP 10404678 A JP10404678 A JP 10404678A JP S5531310 A JPS5531310 A JP S5531310A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- phase
- comparison
- duty
- phase difference
- 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
- Manipulation Of Pulses (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE: To use the flip-flop for the fluctuatin detection circuit which detects the phase difference between the reference pulse and the comparison pulse, and thus to secure an assured detection regardless of the duty of the both pulses in the synthesizer formed with the PLL.
CONSTITUTION: A phase comparison is given at phase comparator 3 between reference pulse (a) of reference pulse input terminal 1 and comparison pulse (b) of comparison pulse input terminal 2. No fluctuation detection output is delivered in the following cases: both the duty and the phase are identical between the two pulses; the duty is equal but the phase of the comparison pulse gains more than the reference pulse; and the phase is identical but the duty is different. And in case the phase of the comparison loses or gains, the detection output is delivered by the function of inverter 9 of the phase loss error pulse plus inverter 10 of the phase gain error pulse. In the case of the loss, output (e) of inverter 9 is supplied to flip- flop 11 along with pulse (b), and phase difference fluctuation pulse 5 is detected in the 1-pulse shifted state.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10404678A JPS5531310A (en) | 1978-08-27 | 1978-08-27 | Detection circuit for phase difference fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10404678A JPS5531310A (en) | 1978-08-27 | 1978-08-27 | Detection circuit for phase difference fluctuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5531310A true JPS5531310A (en) | 1980-03-05 |
Family
ID=14370266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10404678A Pending JPS5531310A (en) | 1978-08-27 | 1978-08-27 | Detection circuit for phase difference fluctuation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5531310A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6095187A (en) * | 1983-10-31 | 1985-05-28 | Sanshin Ind Co Ltd | Inside cylinder injecting internal-combustion engine |
| US4635600A (en) * | 1984-07-30 | 1987-01-13 | Diesel Kiki Co., Ltd. | Fuel injection system for multi-cylinder internal combustion engines |
| JPH01162417A (en) * | 1987-11-20 | 1989-06-26 | Motorola Inc | Frequency synthesizer equipped with digital phase detector having optimum steering and level type locking display |
| JPH02284521A (en) * | 1989-04-25 | 1990-11-21 | Nec Corp | Unlocking detection circuit |
| WO2009011877A2 (en) * | 2007-07-16 | 2009-01-22 | Enphase Energy, Inc. | Method and apparatus for anti-islanding of distributed power generation systems |
-
1978
- 1978-08-27 JP JP10404678A patent/JPS5531310A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6095187A (en) * | 1983-10-31 | 1985-05-28 | Sanshin Ind Co Ltd | Inside cylinder injecting internal-combustion engine |
| US4635600A (en) * | 1984-07-30 | 1987-01-13 | Diesel Kiki Co., Ltd. | Fuel injection system for multi-cylinder internal combustion engines |
| JPH01162417A (en) * | 1987-11-20 | 1989-06-26 | Motorola Inc | Frequency synthesizer equipped with digital phase detector having optimum steering and level type locking display |
| JPH02284521A (en) * | 1989-04-25 | 1990-11-21 | Nec Corp | Unlocking detection circuit |
| WO2009011877A2 (en) * | 2007-07-16 | 2009-01-22 | Enphase Energy, Inc. | Method and apparatus for anti-islanding of distributed power generation systems |
| WO2009011877A3 (en) * | 2007-07-16 | 2009-04-16 | Enphase Energy Inc | Method and apparatus for anti-islanding of distributed power generation systems |
| US7899632B2 (en) | 2007-07-16 | 2011-03-01 | Enphase Energy, Inc. | Method and apparatus for anti-islanding of distributed power generation systems |
| US8195414B2 (en) | 2007-07-16 | 2012-06-05 | Enphase Energy, Inc. | Method and apparatus for identifying an islanding condition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6413814A (en) | Phase locking loop locking synchronizer and signal detector | |
| JPS5590166A (en) | Carrier regenerating circuit | |
| JPS57164620A (en) | Phase comparator | |
| JPS5531310A (en) | Detection circuit for phase difference fluctuation | |
| JPS5346785A (en) | Phase discriminator circuit | |
| JPS5364570A (en) | Phase comparator | |
| JPS5234663A (en) | Frequency divider | |
| JPS5239156A (en) | High voltage generating circuit | |
| JPS57188111A (en) | Synchronizing detection circuit | |
| JPS5320530A (en) | Inverter | |
| JPS52104973A (en) | Direct phase comparison circuit | |
| JPS526936A (en) | Invertor circuit | |
| JPS55133137A (en) | Phase synchronous oscillation circuit | |
| JPS6446319A (en) | Phase locked loop circuit | |
| ES8503180A1 (en) | Pulse corrector. | |
| JPS52147954A (en) | Monostable circuit | |
| JPS6489819A (en) | Phase locked loop circuit | |
| JPS5543247A (en) | Spark-advanced angle controller | |
| JPS5361947A (en) | Differential comparator circuit | |
| JPS5241854A (en) | Power circuit | |
| JPS52145076A (en) | Phase discriminating circuit | |
| JPS5221653A (en) | Dc voltage converter | |
| JPS542049A (en) | Phase comparison circuit | |
| JPS5240051A (en) | Frequency compound system | |
| JPS5646471A (en) | Voltage deviation detecting circuit |