BE530540A - - Google Patents
Info
- Publication number
- BE530540A BE530540A BE530540DA BE530540A BE 530540 A BE530540 A BE 530540A BE 530540D A BE530540D A BE 530540DA BE 530540 A BE530540 A BE 530540A
- Authority
- BE
- Belgium
Links
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/012—Automatic controllers electric details of the transmission means
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL324855X | 1953-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE530540A true BE530540A (de) |
Family
ID=19784131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE530540D BE530540A (de) | 1953-07-22 |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU167294B1 (de) |
| BE (1) | BE530540A (de) |
| CH (1) | CH324855A (de) |
| FR (1) | FR1105072A (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2986651A (en) * | 1956-08-09 | 1961-05-30 | Philips Corp | Trigger circuit-arrangement comprising two transistors |
| US2963638A (en) * | 1957-07-01 | 1960-12-06 | Hycon Mfg Company | Power regulator |
| US3092757A (en) * | 1958-08-01 | 1963-06-04 | Forbro Design Inc | Circuit means for preventing spike or surges at the output of a power supply |
-
0
- BE BE530540D patent/BE530540A/xx unknown
-
1954
- 1954-04-28 AU AU27028/54A patent/AU167294B1/en not_active Expired
- 1954-07-20 FR FR1105072D patent/FR1105072A/fr not_active Expired
- 1954-07-20 CH CH324855D patent/CH324855A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU167294B1 (en) | 1954-07-01 |
| CH324855A (de) | 1957-10-15 |
| FR1105072A (fr) | 1955-11-28 |