GB950182A - Improvements in and relating to electrical circuits employing transistor networks - Google Patents

Improvements in and relating to electrical circuits employing transistor networks

Info

Publication number
GB950182A
GB950182A GB20034/59A GB2003459A GB950182A GB 950182 A GB950182 A GB 950182A GB 20034/59 A GB20034/59 A GB 20034/59A GB 2003459 A GB2003459 A GB 2003459A GB 950182 A GB950182 A GB 950182A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
relating
electrical circuits
june
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
GB20034/59A
Inventor
Eugeniusz Antoszewski
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.)
English Electric Co Ltd
Original Assignee
English Electric Co 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
Priority to NL250981D priority Critical patent/NL250981A/xx
Priority to CA701637A priority patent/CA701637A/en
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB39319/63A priority patent/GB950183A/en
Priority to GB20034/59A priority patent/GB950182A/en
Priority to JP2750859A priority patent/JPS384353B1/ja
Priority to DEE19460A priority patent/DE1141333B/en
Priority to FR829644A priority patent/FR1259724A/en
Priority to JP2719260A priority patent/JPS384354B1/ja
Priority to GB14915/61A priority patent/GB936756A/en
Priority to DEN19939A priority patent/DE1127407B/en
Priority to FR860009A priority patent/FR1287248A/en
Priority to JP1952163A priority patent/JPS3819521B1/ja
Publication of GB950182A publication Critical patent/GB950182A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
    • H03F3/345—DC amplifiers in which all stages are DC-coupled with semiconductor devices only with field-effect devices
    • H03F3/3455—DC amplifiers in which all stages are DC-coupled with semiconductor devices only with field-effect devices with junction-FET's
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electronic Switches (AREA)

Abstract

950,182. Protective arrangements. ENGLISH ELECTRIC CO. Ltd. June 9, 1960 [June 11, 1959], No. 20034/59. Heading H2K. [Also in Division H3] In a time-overcurrent relay circuit, a signal representative of the overcurrent is applied through a time delay network R1C to a transistor having a Zener diode D in its emitter circuit so that if the signal exceeds the breakdown voltage of the diode for more than a predetermined time the transistor conducts. The resulting voltage at the junction of collector load resistors R2 and R3 causes a transistor T2 of a trigger circuit T2, T3 to become conductive and so operate a relay A. Transistor T1 is of silicon type to make the circuit less sensitive to temperature variations.
GB20034/59A 1959-06-11 1959-06-11 Improvements in and relating to electrical circuits employing transistor networks Expired GB950182A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NL250981D NL250981A (en) 1959-06-11
CA701637A CA701637A (en) 1959-06-11 Transistor networks for electrical signal level detection
GB39319/63A GB950183A (en) 1959-06-11 1959-06-11 Improvements in and relating to electrical circuits employing transistor networks
GB20034/59A GB950182A (en) 1959-06-11 1959-06-11 Improvements in and relating to electrical circuits employing transistor networks
JP2750859A JPS384353B1 (en) 1959-06-11 1959-08-27
DEE19460A DE1141333B (en) 1959-06-11 1960-06-10 Transistor circuit as signal level detector with time delay
FR829644A FR1259724A (en) 1959-06-11 1960-06-10 Transistor networks for the detection of electrical signal levels
JP2719260A JPS384354B1 (en) 1959-06-11 1960-06-10
GB14915/61A GB936756A (en) 1959-06-11 1961-04-25 Improvements in or relating to loudspeaking telephone systems
DEN19939A DE1127407B (en) 1959-06-11 1961-04-25 Circuit arrangement for intercom systems
FR860009A FR1287248A (en) 1959-06-11 1961-04-27 Circuit for a speaker phone system
JP1952163A JPS3819521B1 (en) 1959-06-11 1963-04-22

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA701637T
GB20034/59A GB950182A (en) 1959-06-11 1959-06-11 Improvements in and relating to electrical circuits employing transistor networks
NL250981 1960-04-28
NL1127407X 1960-04-28

Publications (1)

Publication Number Publication Date
GB950182A true GB950182A (en) 1964-02-19

Family

ID=76269552

Family Applications (3)

Application Number Title Priority Date Filing Date
GB39319/63A Expired GB950183A (en) 1959-06-11 1959-06-11 Improvements in and relating to electrical circuits employing transistor networks
GB20034/59A Expired GB950182A (en) 1959-06-11 1959-06-11 Improvements in and relating to electrical circuits employing transistor networks
GB14915/61A Expired GB936756A (en) 1959-06-11 1961-04-25 Improvements in or relating to loudspeaking telephone systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB39319/63A Expired GB950183A (en) 1959-06-11 1959-06-11 Improvements in and relating to electrical circuits employing transistor networks

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB14915/61A Expired GB936756A (en) 1959-06-11 1961-04-25 Improvements in or relating to loudspeaking telephone systems

Country Status (6)

Country Link
JP (3) JPS384353B1 (en)
CA (1) CA701637A (en)
DE (2) DE1141333B (en)
FR (2) FR1259724A (en)
GB (3) GB950183A (en)
NL (1) NL250981A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047822A1 (en) * 1980-09-17 1982-03-24 Landskrona Finans AB Stimulator system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH407212A (en) * 1963-08-29 1966-02-15 Siemens Ag Albis Amplitude discriminator with a bistable circuit
US3373295A (en) * 1965-04-27 1968-03-12 Aerojet General Co Memory element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048946B (en) * 1957-07-19 1959-01-22 Siemens Ag Circuit arrangement for controlling the power supply to a consumer with, in particular, an inductive reactance component by means of a transistor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047822A1 (en) * 1980-09-17 1982-03-24 Landskrona Finans AB Stimulator system
US4431001A (en) * 1980-09-17 1984-02-14 Crafon Medical Ab Stimulator system

Also Published As

Publication number Publication date
JPS3819521B1 (en) 1963-09-26
DE1141333B (en) 1962-12-20
CA701637A (en) 1965-01-12
GB936756A (en) 1963-09-11
GB950183A (en) 1964-02-19
JPS384353B1 (en) 1963-02-24
NL250981A (en)
JPS384354B1 (en) 1963-04-24
FR1287248A (en) 1962-03-09
FR1259724A (en) 1961-04-28
DE1127407B (en) 1962-04-12

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