FR2317810A1 - FM limiter for SECAM decoder - is fitted to fourth and fifth transistors coupled to differential amplifier inputs and by own base to fixed bias - Google Patents

FM limiter for SECAM decoder - is fitted to fourth and fifth transistors coupled to differential amplifier inputs and by own base to fixed bias

Info

Publication number
FR2317810A1
FR2317810A1 FR7619234A FR7619234A FR2317810A1 FR 2317810 A1 FR2317810 A1 FR 2317810A1 FR 7619234 A FR7619234 A FR 7619234A FR 7619234 A FR7619234 A FR 7619234A FR 2317810 A1 FR2317810 A1 FR 2317810A1
Authority
FR
France
Prior art keywords
limiter
base
fixed bias
fitted
transistors coupled
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.)
Granted
Application number
FR7619234A
Other languages
French (fr)
Other versions
FR2317810B3 (en
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.)
ZENTRALLABORATORIUM RUNDFUNK
Original Assignee
ZENTRALLABORATORIUM RUNDFUNK
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 ZENTRALLABORATORIUM RUNDFUNK filed Critical ZENTRALLABORATORIUM RUNDFUNK
Publication of FR2317810A1 publication Critical patent/FR2317810A1/en
Application granted granted Critical
Publication of FR2317810B3 publication Critical patent/FR2317810B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H03G11/06—Limiters of angle-modulated signals; such limiters combined with discriminators

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

The FM limiter, for SECAM decoders, has fourth (4) and fifth (5) transistors coupled by their emitters to the bases of the transistors in the differential pair and connected by their own bases to the ends of a two resistor decoupling circuit (14, 15). The decoupling circuit is supplied with a fixed bias (17) at its centre point. (The input signal is applied over a capacitor to the base of the fourth transistor and the output is taken via the collector of one of the differential transistors). The advantage lies in few connections to the IC, little external circuity, and the lowest number of adjustments and the greatest number of functions.
FR7619234A 1975-06-26 1976-06-24 FM limiter for SECAM decoder - is fitted to fourth and fifth transistors coupled to differential amplifier inputs and by own base to fixed bias Granted FR2317810A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD18690675A DD119934A1 (en) 1975-06-26 1975-06-26

Publications (2)

Publication Number Publication Date
FR2317810A1 true FR2317810A1 (en) 1977-02-04
FR2317810B3 FR2317810B3 (en) 1979-07-13

Family

ID=5500824

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7619234A Granted FR2317810A1 (en) 1975-06-26 1976-06-24 FM limiter for SECAM decoder - is fitted to fourth and fifth transistors coupled to differential amplifier inputs and by own base to fixed bias

Country Status (2)

Country Link
DD (1) DD119934A1 (en)
FR (1) FR2317810A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015475A1 (en) * 1990-05-14 1991-11-21 Siemens Ag Gradation compensation circuit for video signals - has differencing amplifier arrangement with facility to set operating point

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015475A1 (en) * 1990-05-14 1991-11-21 Siemens Ag Gradation compensation circuit for video signals - has differencing amplifier arrangement with facility to set operating point

Also Published As

Publication number Publication date
DD119934A1 (en) 1976-05-12
FR2317810B3 (en) 1979-07-13

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Legal Events

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ST Notification of lapse