JPS4928041B1 - - Google Patents
Info
- Publication number
- JPS4928041B1 JPS4928041B1 JP6139868A JP6139868A JPS4928041B1 JP S4928041 B1 JPS4928041 B1 JP S4928041B1 JP 6139868 A JP6139868 A JP 6139868A JP 6139868 A JP6139868 A JP 6139868A JP S4928041 B1 JPS4928041 B1 JP S4928041B1
- Authority
- JP
- Japan
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0053958 | 1967-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4928041B1 true JPS4928041B1 (ja) | 1974-07-23 |
Family
ID=7055375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6139868A Pending JPS4928041B1 (ja) | 1967-08-29 | 1968-08-27 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3604995A (ja) |
| JP (1) | JPS4928041B1 (ja) |
| CH (1) | CH493168A (ja) |
| DE (1) | DE1588136B2 (ja) |
| DK (1) | DK130269B (ja) |
| FR (1) | FR1578530A (ja) |
| GB (1) | GB1202466A (ja) |
| SE (1) | SE356859B (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59168701U (ja) * | 1983-04-28 | 1984-11-12 | 遠藤 清松 | テレビジヨン受像機の画面の拡大に用いるフレネルレンズの組合せの方法 |
| JPS61114401U (ja) * | 1984-12-27 | 1986-07-19 | ||
| JPS61116304U (ja) * | 1984-12-29 | 1986-07-23 | ||
| JPH021701U (ja) * | 1987-11-11 | 1990-01-08 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180842A (en) * | 1978-05-12 | 1979-12-25 | General Electric Company | Timer circuit for use in protective relaying applications |
| JPS5917635B2 (ja) * | 1979-07-13 | 1984-04-23 | 東洋電機製造株式会社 | Ｐｗｍインバ−タ装置 |
| JPS58179176A (ja) * | 1982-04-13 | 1983-10-20 | Mitsubishi Electric Corp | インバ−タ |
| US5838294A (en) * | 1996-12-15 | 1998-11-17 | Honeywell Inc. | Very low duty cycle pulse width modulator |
| DE10301501B4 (de) | 2003-01-16 | 2007-05-03 | Siemens Ag | Schaltungsanordnung und Verfahren zur Erzeugung eines Pulsweiten-modulierten Signals |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3402353A (en) * | 1965-07-14 | 1968-09-17 | E H Res Lab Inc | Trapezoidal pulse generator with diode bridge for switching independent current sources |
| US3440566A (en) * | 1966-02-10 | 1969-04-22 | Gates Radio Co | Pulse duration modulator having trigger circuit utilizing a modified triangular waveform |
-
1967
- 1967-08-29 DE DE19671588136 patent/DE1588136B2/de not_active Withdrawn
-
1968
- 1968-07-23 CH CH1122468A patent/CH493168A/de not_active IP Right Cessation
- 1968-08-20 GB GB3971668A patent/GB1202466A/en not_active Expired
- 1968-08-23 FR FR1578530D patent/FR1578530A/fr not_active Expired
- 1968-08-27 JP JP6139868A patent/JPS4928041B1/ja active Pending
- 1968-08-27 US US3604995D patent/US3604995A/en not_active Expired - Lifetime
- 1968-08-28 DK DK412968A patent/DK130269B/da unknown
- 1968-08-28 SE SE1157868A patent/SE356859B/xx unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59168701U (ja) * | 1983-04-28 | 1984-11-12 | 遠藤 清松 | テレビジヨン受像機の画面の拡大に用いるフレネルレンズの組合せの方法 |
| JPS61114401U (ja) * | 1984-12-27 | 1986-07-19 | ||
| JPS61116304U (ja) * | 1984-12-29 | 1986-07-23 | ||
| JPH021701U (ja) * | 1987-11-11 | 1990-01-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1578530A (ja) | 1969-08-14 |
| DK130269B (da) | 1975-01-27 |
| GB1202466A (en) | 1970-08-19 |
| SE356859B (ja) | 1973-06-04 |
| DE1588136A1 (de) | 1970-03-05 |
| CH493168A (de) | 1970-06-30 |
| DK130269C (ja) | 1975-06-23 |
| US3604995A (en) | 1971-09-14 |
| DE1588136B2 (de) | 1970-11-12 |