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GB907662A - Improvements in electrical signalling systems - Google Patents

Improvements in electrical signalling systems

Info

Publication number
GB907662A
GB907662A GB3740758A GB3740758A GB907662A GB 907662 A GB907662 A GB 907662A GB 3740758 A GB3740758 A GB 3740758A GB 3740758 A GB3740758 A GB 3740758A GB 907662 A GB907662 A GB 907662A
Authority
GB
United Kingdom
Prior art keywords
transistor
pulse
emitter
output
nov
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
Application number
GB3740758A
Inventor
Carl Seigmund Den Brinker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Telecommunications PLC
British Telecommunications Research Ltd
Original Assignee
British Telecommunications PLC
British Telecommunications Research Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Telecommunications PLC, British Telecommunications Research Ltd filed Critical British Telecommunications PLC
Priority to GB3740758A priority Critical patent/GB907662A/en
Publication of GB907662A publication Critical patent/GB907662A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/02—Shaping pulses by amplifying

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electronic Switches (AREA)

Abstract

907,662. Transistor pulse circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Nov. 18, 1959 [Nov. 20, 1958], No. 37407/58. Class 40 (6). The output of a common emitter pulse circuit is shunted by a further transistor having its collector connected to the emitter of the first transistor and its base fed with the inverse of the input waveform so that the further transistor is conductive when the first is cut off. In the Figure, pulses are applied through the emitter follower transistor T1 to an output terminal O feeding a capacitive line. During the negative going part of the input pulses transistor T1 conducts and rapidly charges the line while during the positive portion transistor T1 is cut off but due to the pulse fed through capacitor C transistor T2 becomes conductive to discharge the load so that sharp leading and trailing edges of the output pulse are obtained. A diode D prevents the base of the transistor T2 from being driven positively.
GB3740758A 1958-11-20 1958-11-20 Improvements in electrical signalling systems Expired GB907662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3740758A GB907662A (en) 1958-11-20 1958-11-20 Improvements in electrical signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3740758A GB907662A (en) 1958-11-20 1958-11-20 Improvements in electrical signalling systems

Publications (1)

Publication Number Publication Date
GB907662A true GB907662A (en) 1962-10-10

Family

ID=10396242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3740758A Expired GB907662A (en) 1958-11-20 1958-11-20 Improvements in electrical signalling systems

Country Status (1)

Country Link
GB (1) GB907662A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176799A1 (en) * 1984-09-25 1986-04-09 Fujitsu Limited Emitter coupled logic circuit
EP0281113A2 (en) * 1987-03-03 1988-09-07 Digital Equipment Corporation Semi-conductor buffer circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176799A1 (en) * 1984-09-25 1986-04-09 Fujitsu Limited Emitter coupled logic circuit
EP0281113A2 (en) * 1987-03-03 1988-09-07 Digital Equipment Corporation Semi-conductor buffer circuit
EP0281113A3 (en) * 1987-03-03 1989-02-22 Digital Equipment Corporation Apparatus and method for capacitor coupled complementary buffering

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