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GB1003583A - Transistorised input circuit for radio receivers - Google Patents

Transistorised input circuit for radio receivers

Info

Publication number
GB1003583A
GB1003583A GB2606062A GB2606062A GB1003583A GB 1003583 A GB1003583 A GB 1003583A GB 2606062 A GB2606062 A GB 2606062A GB 2606062 A GB2606062 A GB 2606062A GB 1003583 A GB1003583 A GB 1003583A
Authority
GB
United Kingdom
Prior art keywords
diode
input circuit
circuit
transistorised
july
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
GB2606062A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1003583A publication Critical patent/GB1003583A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
    • H03G11/02—Limiting amplitude; Limiting rate of change of amplitude by means of diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

1,003,583. Transistor amplifying circuits for radio reception. STANDARD TELEPHONE & CABLES Ltd. July 6, 1962 [July 6, 1961], No. 26060/62. Heading H3T. The input circuit for a radio receiver comprises a band-pass filter through which received signals are applied to the input electrode of an amplifying transistor 9 the output of which is coupled to a mixer circuit 12 comprising a ring modulator, overload protection being effected by a first diode 5 connected in parallel with the band-pass filter and a second diode 10 connected between emitter and base of the amplifying transistor. Diode 5 is returned to a tapping point, by-passed by capacitor 6, on a potentiometer chain 7, 8. The circuit is designed for use where a local transmitter interferes with reception from more distant stations.
GB2606062A 1961-07-06 1962-07-06 Transistorised input circuit for radio receivers Expired GB1003583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1961ST018036 DE1232224B (en) 1961-07-06 1961-07-06 Transistor input circuit for radio receiver

Publications (1)

Publication Number Publication Date
GB1003583A true GB1003583A (en) 1965-09-08

Family

ID=7457698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2606062A Expired GB1003583A (en) 1961-07-06 1962-07-06 Transistorised input circuit for radio receivers

Country Status (2)

Country Link
DE (1) DE1232224B (en)
GB (1) GB1003583A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230835A1 (en) * 1982-08-19 1984-02-23 Standard Elektrik Lorenz Ag, 7000 Stuttgart Radioreceiver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881312A (en) * 1955-05-18 1959-04-07 Hogan Lab Inc Synchronous detector circuit
BE557496A (en) * 1956-05-15
DE1148605B (en) * 1956-10-17 1963-05-16 Blaupunkt Werke Gmbh Transistor amplifier automatically controlled by a control voltage
US3052853A (en) * 1959-06-03 1962-09-04 Bendix Corp Attenuator for strong signals in a radio receiver

Also Published As

Publication number Publication date
DE1232224B (en) 1967-01-12

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