ZA764974B - Mixer bias circuit for varactor television tuners - Google Patents

Mixer bias circuit for varactor television tuners

Info

Publication number: ZA764974B
Authority: ZA; South Africa
Prior art keywords: varactor; bias circuit; television tuners; mixer bias; mixer
Prior art date: 1975-08-25

Application number

ZA764974A

Other languages

English (en)

Inventor

G Carter

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.)

1975-08-25

Filing date

1976-08-18

Publication date

1977-07-27

1976-08-18 Application filed by Rca Corp filed Critical Rca Corp

1977-07-27 Publication of ZA764974B publication Critical patent/ZA764974B/xx

Links

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
- H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
- H03D7/125—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes with field effect transistors
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0218—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of preset values
- 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
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Multimedia (AREA)
Computer Networks & Wireless Communication (AREA)
Superheterodyne Receivers (AREA)

ZA764974A 1975-08-25 1976-08-18 Mixer bias circuit for varactor television tuners ZA764974B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US60769875A	1975-08-25	1975-08-25

Publications (1)

Publication Number	Publication Date
ZA764974B true ZA764974B (en)	1977-07-27

Family

ID=24433332

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA764974A ZA764974B (en)	1975-08-25	1976-08-18	Mixer bias circuit for varactor television tuners

Country Status (15)

Country	Link
JP (1)	JPS591011B2 (fr)
AT (1)	AT371651B (fr)
AU (1)	AU507375B2 (fr)
BE (1)	BE845467A (fr)
DE (1)	DE2638310C3 (fr)
DK (1)	DK380976A (fr)
ES (1)	ES450963A1 (fr)
FI (1)	FI63645C (fr)
FR (1)	FR2322481A1 (fr)
GB (1)	GB1553869A (fr)
IT (1)	IT1067991B (fr)
NL (1)	NL7609401A (fr)
PL (1)	PL108050B1 (fr)
SE (1)	SE405667B (fr)
ZA (1)	ZA764974B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3401863C2 (de) *	1984-01-20	1986-01-30	Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen	Bandabhängig schaltbare VHF-Mischerschaltungsanordnung
JPH0630401Y2 (ja) *	1990-06-01	1994-08-17	橋本電機工業株式会社	ベニヤテンダーライザー

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3970254A (en) *	1974-08-19	1976-07-20	Black Clawson Fibreclaim, Inc.	Method for separating glass from heat resistant materials
US3976944A (en) *	1975-02-13	1976-08-24	General Electric Company	Bias optimized FET mixer for varactor tuner

1976
- 1976-08-18 SE SE7609198A patent/SE405667B/xx unknown
- 1976-08-18 GB GB34472/76A patent/GB1553869A/en not_active Expired
- 1976-08-18 ZA ZA764974A patent/ZA764974B/xx unknown
- 1976-08-18 FI FI762357A patent/FI63645C/fi not_active IP Right Cessation
- 1976-08-19 AU AU16959/76A patent/AU507375B2/en not_active Expired
- 1976-08-20 FR FR7625374A patent/FR2322481A1/fr active Granted
- 1976-08-23 IT IT26442/76A patent/IT1067991B/it active
- 1976-08-24 NL NL7609401A patent/NL7609401A/xx not_active Application Discontinuation
- 1976-08-24 DK DK380976A patent/DK380976A/da not_active Application Discontinuation
- 1976-08-24 BE BE170034A patent/BE845467A/fr not_active IP Right Cessation
- 1976-08-25 PL PL1976191997A patent/PL108050B1/pl unknown
- 1976-08-25 DE DE2638310A patent/DE2638310C3/de not_active Expired
- 1976-08-25 JP JP51102186A patent/JPS591011B2/ja not_active Expired
- 1976-08-25 AT AT0630276A patent/AT371651B/de not_active IP Right Cessation
- 1976-08-25 ES ES450963A patent/ES450963A1/es not_active Expired

Also Published As

Publication number	Publication date
GB1553869A (en)	1979-10-10
SE7609198L (sv)	1977-02-26
NL7609401A (nl)	1977-03-01
BE845467A (fr)	1976-12-16
DE2638310C3 (de)	1981-11-05
JPS591011B2 (ja)	1984-01-10
DE2638310A1 (de)	1977-03-03
FI63645C (fi)	1983-07-11
AU507375B2 (en)	1980-02-14
AT371651B (de)	1983-07-25
ES450963A1 (es)	1977-08-16
JPS5227206A (en)	1977-03-01
DK380976A (da)	1977-02-26
FR2322481A1 (fr)	1977-03-25
FI63645B (fi)	1983-03-31
IT1067991B (it)	1985-03-21
PL108050B1 (pl)	1980-03-31
DE2638310B2 (de)	1978-01-05
FI762357A7 (fr)	1977-02-26
AU1695976A (en)	1978-02-23
FR2322481B1 (fr)	1980-05-30
ATA630276A (de)	1982-11-15
SE405667B (sv)	1978-12-18

Publication	Publication Date	Title
JPS52113577A (en)	1977-09-22	Tuning oscillator stabilizing circuit
JPS5266305A (en)	1977-06-01	Frequency synthesizer tuner for television receiver
JPS5233489A (en)	1977-03-14	Solid state tuning condenser
JPS52105714A (en)	1977-09-05	Twoomode frequency synthesizer for television tuner
JPS5279713A (en)	1977-07-05	Tuning circuit for high frequency receiver
GB1546200A (en)	1979-05-16	Horizontal afc circuit
JPS5261904A (en)	1977-05-21	Tuner for television receiver
AU505065B2 (en)	1979-11-08	Automatic fine tuning circuit
JPS5380106A (en)	1978-07-15	Tuner circuit
JPS5311505A (en)	1978-02-02	Tuning circuit for superheterodyne high frequency receiver
JPS5215214A (en)	1977-02-04	Circuit for tuning high frequency receiver
JPS51147903A (en)	1976-12-18	Tuning circuit
JPS5275205A (en)	1977-06-24	Tuning circuit for high frequency receiver
JPS5255807A (en)	1977-05-07	Tuning circuit
JPS533002A (en)	1978-01-12	Television tuner
JPS5219917A (en)	1977-02-15	Electronic switch for television
GB1553869A (en)	1979-10-10	Tuner apparatus with mixer bias circuit
JPS5264801A (en)	1977-05-28	Oscillation circuit for television tuner
JPS51136202A (en)	1976-11-25	Pushhbutton radio tuner
AU1558876A (en)	1978-01-12	Supply circuit for television receivers
JPS5357902A (en)	1978-05-25	Circuit for tuning heterodyne receiver
JPS51137301A (en)	1976-11-27	Radio receiver tuner
AU485856B2 (en)	1977-08-25	Horizontal afc circuit
AU495141B2 (en)	1976-08-26	Receiver tuning circuit
JPS535501A (en)	1978-01-19	Tuning device for electronic tuner