GB608856A - Rectifier arrangement - Google Patents
Rectifier arrangementInfo
- Publication number
- GB608856A GB608856A GB5805/45A GB580545A GB608856A GB 608856 A GB608856 A GB 608856A GB 5805/45 A GB5805/45 A GB 5805/45A GB 580545 A GB580545 A GB 580545A GB 608856 A GB608856 A GB 608856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- polarity
- amplifier
- over
- operated
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
-
- 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
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
608,856. Loud-speaking telephone systems. AUTOPHON AKT.-GES. March 8, 1945, No. 5805. Convention date, Dec. 4, 1942. [Class 40 (iv)] [Also in Group XXXVIII] A bridge rectifier network, arranged to supply current to one device independent of the polarity of the input current, has other devices connected across some of the rectifiers, so as to receive current whose magnitude depends on the input polarity. The invention is applied to a loud-speaking telephone substation, Fig. 2, whose speaking direction is controlled, as described in Specification 608,850, according to the polarity of current received from the exchange over the phantom of the subscriber's line. The relay E, which energizes the substation amplifier, is initially operated by a pulse of A.C. over condenser CI and remains operated thereafter over its own contact by incoming D.C. irrespective of the polarity thereof. The visual signal SZ and the relay U, however, are only energized when the incoming current is negative, U switching the amplifier into the " receive " position. Relapse of U on receipt of positive polarity switches the amplifier to the " transmit position. If the subscribers prefer to use the car-piece T, switch TK is operated, disconnecting U and SZ and also resistance W3 so that the D.C. current is reduced to operate switching means at the exchange, whereby weak A.C. is sent to the distant subscriber to cause his lamp SZ to glow. Clearing down is effected by opening switch ES which breaks the holding circuit for E.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH608856X | 1942-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB608856A true GB608856A (en) | 1948-09-22 |
Family
ID=4523258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5805/45A Expired GB608856A (en) | 1942-12-04 | 1945-03-08 | Rectifier arrangement |
Country Status (3)
Country | Link |
---|---|
US (1) | US2503011A (en) |
CH (1) | CH254092A (en) |
GB (1) | GB608856A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2877402A (en) * | 1955-07-19 | 1959-03-10 | Leece Neville Co | Alternator-rectifier electrical generating system |
US3026465A (en) * | 1955-07-19 | 1962-03-20 | Leece Neville Co | Alternator-rectifier electrical system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1078194A (en) * | 1963-06-14 | 1967-08-02 | Triplite Ltd | Improvements in or relating to stop means for textile machines |
US3343158A (en) * | 1964-03-04 | 1967-09-19 | Stop Motion Devices Corp | Electronic control for fault detection and stop-motion system |
-
1942
- 1942-12-04 CH CH254092D patent/CH254092A/en unknown
-
1944
- 1944-05-12 US US535295A patent/US2503011A/en not_active Expired - Lifetime
-
1945
- 1945-03-08 GB GB5805/45A patent/GB608856A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2877402A (en) * | 1955-07-19 | 1959-03-10 | Leece Neville Co | Alternator-rectifier electrical generating system |
US3026465A (en) * | 1955-07-19 | 1962-03-20 | Leece Neville Co | Alternator-rectifier electrical system |
Also Published As
Publication number | Publication date |
---|---|
US2503011A (en) | 1950-04-04 |
CH254092A (en) | 1948-04-15 |
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