GB1404078A - Telephone outpulser circuits - Google Patents
Telephone outpulser circuitsInfo
- Publication number
- GB1404078A GB1404078A GB3161273A GB3161273A GB1404078A GB 1404078 A GB1404078 A GB 1404078A GB 3161273 A GB3161273 A GB 3161273A GB 3161273 A GB3161273 A GB 3161273A GB 1404078 A GB1404078 A GB 1404078A
- Authority
- GB
- United Kingdom
- Prior art keywords
- store
- transistor
- pulse
- fet
- turned
- 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
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
- H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Meter Arrangements (AREA)
- Interface Circuits In Exchanges (AREA)
- Electronic Switches (AREA)
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3161273A GB1404078A (en) | 1973-07-03 | 1973-07-03 | Telephone outpulser circuits |
ZA00742857A ZA742857B (en) | 1973-07-03 | 1974-05-06 | Improvements in or relating to electronics switching circuits |
IT24191/74A IT1015222B (it) | 1973-07-03 | 1974-06-20 | Perfezionamento nei circuiti elet tronici di commutazione |
DE2430740A DE2430740A1 (de) | 1973-07-03 | 1974-06-26 | Schaltungsanordnung zur waehlimpulserzeugung in tastwahl-fernsprechapparaten |
BR5356/74A BR7405356A (pt) | 1973-07-03 | 1974-06-28 | Unidade de pulsos |
ES427877A ES427877A1 (es) | 1973-07-03 | 1974-07-02 | Mejoras en las unidades de emision de impulsos. |
FR7422934A FR2236322B2 (es) | 1973-07-03 | 1974-07-02 | |
BE2053727A BE817196R (fr) | 1973-07-03 | 1974-07-03 | Circuit de numerotation pour appareil d'abonne telephonique |
AR254529A AR203751A1 (es) | 1973-07-03 | 1974-07-04 | Unidad emisora de pulsos para un aparato de abonados telefonicos |
AU69144/74A AU483003B2 (en) | 1973-07-03 | 1975-05-20 | Improvements in or relating to electronic switching circuits |
HK288/77A HK28877A (en) | 1973-07-03 | 1977-06-09 | Improvements in or relating to telephone outpulser circuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3161273A GB1404078A (en) | 1973-07-03 | 1973-07-03 | Telephone outpulser circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1404078A true GB1404078A (en) | 1975-08-28 |
Family
ID=10325756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3161273A Expired GB1404078A (en) | 1973-07-03 | 1973-07-03 | Telephone outpulser circuits |
Country Status (10)
Country | Link |
---|---|
AR (1) | AR203751A1 (es) |
BE (1) | BE817196R (es) |
BR (1) | BR7405356A (es) |
DE (1) | DE2430740A1 (es) |
ES (1) | ES427877A1 (es) |
FR (1) | FR2236322B2 (es) |
GB (1) | GB1404078A (es) |
HK (1) | HK28877A (es) |
IT (1) | IT1015222B (es) |
ZA (1) | ZA742857B (es) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488450A (en) * | 1966-12-02 | 1970-01-06 | American Telephone & Telegraph | Sender for transmitting trains of pulses |
-
1973
- 1973-07-03 GB GB3161273A patent/GB1404078A/en not_active Expired
-
1974
- 1974-05-06 ZA ZA00742857A patent/ZA742857B/xx unknown
- 1974-06-20 IT IT24191/74A patent/IT1015222B/it active
- 1974-06-26 DE DE2430740A patent/DE2430740A1/de active Pending
- 1974-06-28 BR BR5356/74A patent/BR7405356A/pt unknown
- 1974-07-02 FR FR7422934A patent/FR2236322B2/fr not_active Expired
- 1974-07-02 ES ES427877A patent/ES427877A1/es not_active Expired
- 1974-07-03 BE BE2053727A patent/BE817196R/xx not_active IP Right Cessation
- 1974-07-04 AR AR254529A patent/AR203751A1/es active
-
1977
- 1977-06-09 HK HK288/77A patent/HK28877A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
ES427877A1 (es) | 1976-11-16 |
FR2236322B2 (es) | 1978-11-24 |
IT1015222B (it) | 1977-05-10 |
BR7405356A (pt) | 1976-08-31 |
AU6914474A (en) | 1975-11-20 |
HK28877A (en) | 1977-06-17 |
BE817196R (fr) | 1975-01-03 |
FR2236322A2 (es) | 1975-01-31 |
AR203751A1 (es) | 1975-10-15 |
ZA742857B (en) | 1975-03-26 |
DE2430740A1 (de) | 1975-01-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |