GB1426007A - Transistor circuit having a hysteresis characterisitc - Google Patents

Transistor circuit having a hysteresis characterisitc

Info

Publication number
GB1426007A
GB1426007A GB4383273A GB4383273A GB1426007A GB 1426007 A GB1426007 A GB 1426007A GB 4383273 A GB4383273 A GB 4383273A GB 4383273 A GB4383273 A GB 4383273A GB 1426007 A GB1426007 A GB 1426007A
Authority
GB
United Kingdom
Prior art keywords
circuit
colour
input
sept
characterisitc
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
GB4383273A
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of GB1426007A publication Critical patent/GB1426007A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/70—Circuits for processing colour signals for colour killing
    • H04N9/71—Circuits for processing colour signals for colour killing combined with colour gain control
    • 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manipulation Of Pulses (AREA)
  • Processing Of Color Television Signals (AREA)
  • Electronic Switches (AREA)
  • Amplifiers (AREA)

Abstract

1426007 Transistor bi-stable circuits; colour television SONY CORP 18 Sept 1973 [22 Sept 1972] 43832/73 Headings H3T and H4F A bi-stable transistor circuit as shown at 24 is used to generate a colour killer signal K, and has the magnitude of its output voltage swing made independent of the difference between the input threshold levels at which the circuit respectively changes state in the two directions. The input D.C. level E IN is derived from the colour burst signal (18, 19, 21, 22). Resistors R6, R7 determine the separation between the two thresholds, and R8, R9 determine the output swing. R9 may be zero. The circuit is also said to respond to advantageously lower levels of input signal than a Schmitt trigger circuit.
GB4383273A 1972-09-22 1973-09-18 Transistor circuit having a hysteresis characterisitc Expired GB1426007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11034872U JPS4966329U (en) 1972-09-22 1972-09-22

Publications (1)

Publication Number Publication Date
GB1426007A true GB1426007A (en) 1976-02-25

Family

ID=14533466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4383273A Expired GB1426007A (en) 1972-09-22 1973-09-18 Transistor circuit having a hysteresis characterisitc

Country Status (10)

Country Link
JP (1) JPS4966329U (en)
BR (1) BR7307322D0 (en)
CA (1) CA1002121A (en)
DE (1) DE2346931C3 (en)
ES (1) ES418976A1 (en)
FR (1) FR2217860B1 (en)
GB (1) GB1426007A (en)
IT (1) IT994312B (en)
NL (1) NL7313141A (en)
SE (1) SE394068B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055375A2 (en) * 1980-12-30 1982-07-07 International Business Machines Corporation Push-pull driver circuit with reduced interference voltage generation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628629Y2 (en) * 1977-05-19 1987-02-27

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1162875B (en) * 1962-07-31 1964-02-13 Schaltbau Gmbh Electronic toggle switch with transistors
US3737675A (en) * 1971-12-15 1973-06-05 Lear Siegler Inc Latched gating circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0055375A2 (en) * 1980-12-30 1982-07-07 International Business Machines Corporation Push-pull driver circuit with reduced interference voltage generation
EP0055375A3 (en) * 1980-12-30 1982-08-04 International Business Machines Corporation Push-pull driver circuit with reduced interference voltage generation

Also Published As

Publication number Publication date
NL7313141A (en) 1974-03-26
IT994312B (en) 1975-10-20
FR2217860A1 (en) 1974-09-06
FR2217860B1 (en) 1976-12-03
SE394068B (en) 1977-05-31
DE2346931B2 (en) 1976-03-11
CA1002121A (en) 1976-12-21
ES418976A1 (en) 1976-04-16
DE2346931A1 (en) 1974-04-11
DE2346931C3 (en) 1983-05-05
JPS4966329U (en) 1974-06-10
BR7307322D0 (en) 1974-08-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee