GB1357807A - Combined tuning and signal strength indicator circuit - Google Patents

Combined tuning and signal strength indicator circuit

Info

Publication number
GB1357807A
GB1357807A GB3983271A GB3983271A GB1357807A GB 1357807 A GB1357807 A GB 1357807A GB 3983271 A GB3983271 A GB 3983271A GB 3983271 A GB3983271 A GB 3983271A GB 1357807 A GB1357807 A GB 1357807A
Authority
GB
United Kingdom
Prior art keywords
transistor
transistors
amplifier
emitter
detector
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
GB3983271A
Other languages
English (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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of GB1357807A publication Critical patent/GB1357807A/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
    • 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
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Amplifiers (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Noise Elimination (AREA)
GB3983271A 1970-08-26 1971-08-25 Combined tuning and signal strength indicator circuit Expired GB1357807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6701070A 1970-08-26 1970-08-26

Publications (1)

Publication Number Publication Date
GB1357807A true GB1357807A (en) 1974-06-26

Family

ID=22073149

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3983271A Expired GB1357807A (en) 1970-08-26 1971-08-25 Combined tuning and signal strength indicator circuit

Country Status (9)

Country Link
US (1) US3673499A (cg-RX-API-DMAC7.html)
JP (1) JPS522561B1 (cg-RX-API-DMAC7.html)
AU (1) AU459753B2 (cg-RX-API-DMAC7.html)
CA (1) CA953369A (cg-RX-API-DMAC7.html)
DE (1) DE2142660B2 (cg-RX-API-DMAC7.html)
FR (1) FR2106038A5 (cg-RX-API-DMAC7.html)
GB (1) GB1357807A (cg-RX-API-DMAC7.html)
HK (1) HK44478A (cg-RX-API-DMAC7.html)
NL (1) NL176510C (cg-RX-API-DMAC7.html)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039956A (en) * 1975-09-05 1977-08-02 General Motors Corporation Electronic indicator
JPS52153610A (en) * 1976-06-17 1977-12-20 Pioneer Electronic Corp Circuit for driving signal meter of receiver
US4156848A (en) * 1977-05-02 1979-05-29 Motorola, Inc. High dynamic range detector for indicating the quieting level of an FM receiver
JPS54111201A (en) * 1978-02-20 1979-08-31 Nec Corp Signal processing circuit
US4237556A (en) * 1978-03-06 1980-12-02 Trio Kabushiki Kaisha Superheterodyne receiver having distortion reducing circuitry
JPS54121609A (en) * 1978-03-15 1979-09-20 Hitachi Ltd Fm tuner
JPS54128382A (en) * 1978-03-29 1979-10-04 Hitachi Ltd Tuning signal intensity detecting circuit
US4285065A (en) * 1980-01-21 1981-08-18 Motorola, Inc. Radio with audio graphic equalizer
US4327332A (en) * 1980-01-31 1982-04-27 Rca Corporation Circuit arrangement useful in developing decoupled operating voltages for IF amplifier stages of an integrated circuit
JPS56147525A (en) * 1980-04-18 1981-11-16 Hitachi Ltd Reception playback system
US4385400A (en) * 1980-04-24 1983-05-24 Rca Corporation Automatic gain control arrangement useful in an FM radio receiver
GB2094102B (en) * 1981-02-04 1984-06-27 Philips Electronic Associated Radio receiver suitable for use in a spaced carrier area coverage system
JPS57196631A (en) * 1981-05-28 1982-12-02 Sanyo Electric Co Ltd Detecting circuit for pulse noise
US4455681A (en) * 1981-12-21 1984-06-19 Wile Donald T Dual threshold wide band/narrow band AGC
US4442549A (en) * 1982-05-27 1984-04-10 Motorola, Inc. Meter drive circuit
GB2145890B (en) * 1983-09-01 1987-05-20 Plessey Co Plc Signal strength detector
DE3533330A1 (de) * 1984-09-18 1986-03-27 Nec Corp., Tokio/Tokyo Schaltung zum detektieren des rauschpegels in einem fm-signal fuer einen am/fm-empfaenger
JPH01208915A (ja) * 1988-02-16 1989-08-22 Sanyo Electric Co Ltd Ｆｍ受信機
US7444126B1 (en) * 1995-12-22 2008-10-28 Microtune (Texas), L.P. Signal-to-noise optimized fully monolithic video receiver IF channel
US6625238B2 (en) * 2000-03-29 2003-09-23 Sony Corporation Low power and high linearity receivers with reactively biased front ends
US6782062B1 (en) * 2000-03-29 2004-08-24 Sony Corporation Low power and high linearity receivers with reactively biased front ends
US6668028B1 (en) * 2000-03-29 2003-12-23 Sony Corporation Low-power CDMA receiver
US7061993B2 (en) * 2001-08-29 2006-06-13 Sony Corporation CDMA receiver architecture for lower bypass switch point
US6687491B2 (en) * 2002-01-18 2004-02-03 Sony Corporation Direct conversion of low power high linearity receiver

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289840A (en) * 1939-03-01 1942-07-14 Telefunken Gmbh Frequency modulation receiver
DE757508C (de) * 1939-03-02 1954-02-01 Telefunken Gmbh Empfaenger fuer frequenz- oder phasenmodulierte Schwingungen

Also Published As

Publication number Publication date
NL7111699A (cg-RX-API-DMAC7.html) 1972-02-29
FR2106038A5 (cg-RX-API-DMAC7.html) 1972-04-28
JPS522561B1 (cg-RX-API-DMAC7.html) 1977-01-22
NL176510C (nl) 1985-04-16
US3673499A (en) 1972-06-27
AU459753B2 (en) 1975-04-10
DE2142660A1 (de) 1972-03-02
NL176510B (nl) 1984-11-16
DE2142660B2 (de) 1973-10-18
HK44478A (en) 1978-08-18
CA953369A (en) 1974-08-20
AU3214071A (en) 1973-02-15

Similar Documents

Publication Publication Date Title
GB1367660A (en) Circuit for generating a difference current value between a pair of current mode input signals
GB1322516A (en) Signal translating stage
GB1476498A (en) Detecting circuit
US4247949A (en) Signal strength detecting circuit
GB1472670A (en) Differential amplifier
GB1513810A (en) Transistor amplifiers including protective circuits
US3740658A (en) Temperature compensated amplifying circuit
GB1229274A (cg-RX-API-DMAC7.html)
GB1450959A (en) Signal limiter
US4359693A (en) Full wave amplitude modulation detector circuit
GB1389255A (en) Peak-to-peak electrical signal detector
GB1357353A (en) Detection circuit useful in muting circuits
GB1238748A (cg-RX-API-DMAC7.html)
US2926308A (en) Transistor biasing circuit
GB773470A (en) Improvements in or relating to detector-circuit arrangements
GB961131A (en) Gain control system
US3585411A (en) Frequency multiplying circuit
GB984588A (en) Squelch circuit
GB1177760A (en) Improvements in Transistor Amplifying Circuits
GB1377157A (en) Gain control circuit
GB1238698A (cg-RX-API-DMAC7.html)
GB1448684A (en) If amplifiers
US3629611A (en) Electronic processing apparatus
GB1444637A (en) Circuit arrangement for separating synchronizing signals from a video signal
GB1470456A (en) Automatic gain control circuits

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years