GB698538A - Improvements in or relating to circuit-arrangements for energizing relays - Google Patents
Improvements in or relating to circuit-arrangements for energizing relaysInfo
- Publication number
- GB698538A GB698538A GB7649/52A GB764952A GB698538A GB 698538 A GB698538 A GB 698538A GB 7649/52 A GB7649/52 A GB 7649/52A GB 764952 A GB764952 A GB 764952A GB 698538 A GB698538 A GB 698538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- relay
- circuit
- selector
- output
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
Abstract
698,538. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 25, 1952 [March 28, 1951], No. 7649/52. Class 40 (iv). [Also in Group XL (c)] A more rapid operation of a relay T connected in the output circuit of a valve B1 is obtained by connecting an inductor L in series with the relay and with the output of a second valve B2, the control electrode of the second valve being coupled to an output of the first whereby when the first is rendered conductive the second is cut off. The back E.M.F. of the inductor opposes that of the relay coil and thus prevents the drop in anode voltage of the first valve that would otherwise occur. The circuit shown is used in the register of an automatic telephone system to interrupt the rotation of a selector K when the voltage comparator OI indicates that the voltage from the selector is equal to that from a marking switch MS controlled by the subscriber. When the equality occurs valve B1 is cut off and contact T breaks the circuit of the motor D of the selector. Momentary interruption of the anode current of valve B2 causes the relay to release but it is rapidly restored when current again flows, due to the action of valve B2 fed from the screen of valve B1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL698538X | 1951-03-28 | ||
| NL908986X | 1951-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB698538A true GB698538A (en) | 1953-10-14 |
Family
ID=26644505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7649/52A Expired GB698538A (en) | 1951-03-28 | 1952-03-25 | Improvements in or relating to circuit-arrangements for energizing relays |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE908986C (en) |
| GB (1) | GB698538A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE952276C (en) * | 1952-11-20 | 1956-11-15 | Philips Nv | Self-connecting telephone system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1158126B (en) * | 1958-11-08 | 1963-11-28 | Josef Dirr | Coordinate switch for digit storage for telecommunications, especially telephone switching systems |
-
1952
- 1952-03-25 GB GB7649/52A patent/GB698538A/en not_active Expired
- 1952-03-26 DE DEN5266A patent/DE908986C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE952276C (en) * | 1952-11-20 | 1956-11-15 | Philips Nv | Self-connecting telephone system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE908986C (en) | 1954-04-12 |
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