FR2364564A1 - Circuit de compensation du courant de decalage dans un demodulateur synchrone a multiplieur, notamment un demodulateur stereophonique multiplex - Google Patents
Circuit de compensation du courant de decalage dans un demodulateur synchrone a multiplieur, notamment un demodulateur stereophonique multiplexInfo
- Publication number
- FR2364564A1 FR2364564A1 FR7727815A FR7727815A FR2364564A1 FR 2364564 A1 FR2364564 A1 FR 2364564A1 FR 7727815 A FR7727815 A FR 7727815A FR 7727815 A FR7727815 A FR 7727815A FR 2364564 A1 FR2364564 A1 FR 2364564A1
- Authority
- FR
- France
- Prior art keywords
- demodulator
- current compensation
- compensation circuit
- offset current
- synchronous multiplier
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
- H03F3/45098—PI types
- H03F3/45103—Non-folded cascode stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/22—Homodyne or synchrodyne circuits
- H03D1/2209—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders
- H03D1/2227—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders using switches for the decoding
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stereo-Broadcasting Methods (AREA)
- Amplifiers (AREA)
Abstract
a. Amplificateur différentiel. b. Circuit caractérisé par un moyen de compensation de courant branché entre la borne d'entrée du circuit de courant et le collecteur du troisième transistor de façon à compenser les composantes de courant de base du cinquième et du sixième transistors. c. L'invention s'applique aux amplificateurs différentiels.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51110366A JPS5921233B2 (ja) | 1976-09-14 | 1976-09-14 | ステレオ復調回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2364564A1 true FR2364564A1 (fr) | 1978-04-07 |
FR2364564B1 FR2364564B1 (fr) | 1982-11-12 |
Family
ID=14533961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7727815A Granted FR2364564A1 (fr) | 1976-09-14 | 1977-09-14 | Circuit de compensation du courant de decalage dans un demodulateur synchrone a multiplieur, notamment un demodulateur stereophonique multiplex |
Country Status (8)
Country | Link |
---|---|
US (1) | US4140878A (fr) |
JP (1) | JPS5921233B2 (fr) |
AU (1) | AU511077B2 (fr) |
CA (1) | CA1085469A (fr) |
DE (1) | DE2741435A1 (fr) |
FR (1) | FR2364564A1 (fr) |
GB (1) | GB1589988A (fr) |
NL (1) | NL187599C (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5832359Y2 (ja) * | 1978-09-18 | 1983-07-18 | 株式会社ケンウッド | ステレオ復調器 |
DE2850792A1 (de) * | 1978-11-23 | 1980-06-04 | Siemens Ag | Mikrofonverstaerker, insbesondere fuer fernsprechanlagen |
DE2924171A1 (de) * | 1979-06-15 | 1980-12-18 | Siemens Ag | Monolithisch integrierbarer transistorverstaerker |
US4267516A (en) * | 1979-08-03 | 1981-05-12 | Tektronix, Inc. | Common-emitter fT doubler amplifier employing a feed forward amplifier to reduce non-linearities and thermal distortion |
JPS5636246A (en) * | 1979-08-31 | 1981-04-09 | Nec Corp | Stereo signal demodulating circuit |
DE3130341A1 (de) * | 1980-09-17 | 1982-06-16 | Hitachi, Ltd., Tokyo | Rauschsperre und mit dieser versehener fm-funkempfaenger |
JPS5943644A (ja) * | 1982-09-04 | 1984-03-10 | Pioneer Electronic Corp | Fmステレオ復調回路 |
JPS5979615A (ja) * | 1982-10-29 | 1984-05-08 | Hitachi Micro Comput Eng Ltd | 半導体集積回路装置 |
JPS59226531A (ja) * | 1983-06-08 | 1984-12-19 | Sony Corp | Fmステレオ復調回路 |
US4591800A (en) * | 1984-10-01 | 1986-05-27 | Motorola, Inc. | Linear power amplifier feedback improvement |
US4617523A (en) * | 1985-08-08 | 1986-10-14 | Tektronix, Inc. | Differential pair with compensation for effects of parasitic capacitance |
FI99171C (fi) * | 1991-09-12 | 1997-10-10 | Nokia Mobile Phones Ltd | Kytkentä RSSI-signaalin lähtöjännitteen skaalaukseen |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2033991A5 (fr) * | 1969-02-06 | 1970-12-04 | Motorola Inc | |
FR2077573A1 (fr) * | 1969-12-29 | 1971-10-29 | Rca Corp |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1529080A (en) * | 1975-10-09 | 1978-10-18 | Sony Corp | Mpx stereo signal demodulators |
-
1976
- 1976-09-14 JP JP51110366A patent/JPS5921233B2/ja not_active Expired
-
1977
- 1977-09-13 AU AU28746/77A patent/AU511077B2/en not_active Expired
- 1977-09-13 CA CA286,646A patent/CA1085469A/fr not_active Expired
- 1977-09-13 US US05/832,896 patent/US4140878A/en not_active Expired - Lifetime
- 1977-09-14 DE DE19772741435 patent/DE2741435A1/de active Granted
- 1977-09-14 GB GB38383/77A patent/GB1589988A/en not_active Expired
- 1977-09-14 NL NLAANVRAGE7710091,A patent/NL187599C/xx not_active IP Right Cessation
- 1977-09-14 FR FR7727815A patent/FR2364564A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2033991A5 (fr) * | 1969-02-06 | 1970-12-04 | Motorola Inc | |
FR2077573A1 (fr) * | 1969-12-29 | 1971-10-29 | Rca Corp |
Also Published As
Publication number | Publication date |
---|---|
JPS5335401A (en) | 1978-04-01 |
US4140878A (en) | 1979-02-20 |
AU2874677A (en) | 1979-03-22 |
AU511077B2 (en) | 1980-07-24 |
DE2741435C2 (fr) | 1987-07-02 |
JPS5921233B2 (ja) | 1984-05-18 |
GB1589988A (en) | 1981-05-20 |
NL7710091A (nl) | 1978-03-16 |
CA1085469A (fr) | 1980-09-09 |
NL187599C (nl) | 1991-11-18 |
FR2364564B1 (fr) | 1982-11-12 |
DE2741435A1 (de) | 1978-03-23 |
NL187599B (nl) | 1991-06-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2364564A1 (fr) | Circuit de compensation du courant de decalage dans un demodulateur synchrone a multiplieur, notamment un demodulateur stereophonique multiplex | |
ES433732A1 (es) | Perfeccionamientos introducidos en un amplificador casi com-plementario. | |
AU497007B2 (en) | Telephone amplifier circuit | |
GB1302806A (fr) | ||
FR2592538A1 (fr) | Etage amplificateur differentiel pour hautes frequences et amplificateur le comportant. | |
FR2377115A1 (fr) | ||
FR2420876A1 (fr) | Circuit d'amplification dont il est possible de regler le coefficient d'amplification | |
JPS5636246A (en) | Stereo signal demodulating circuit | |
JPS5238889A (en) | Vertical junction type field effect transistor | |
ES382016A1 (es) | Un dispositivo de amplificador diferencial. | |
JPS5228844A (en) | Small signal amplification circuit | |
FR2408948A1 (fr) | Source de courant pour differentiel | |
JPS5245244A (en) | Push-pull amplifier circuit | |
JPS5342652A (en) | Transistor circuit | |
JPS5265642A (en) | Transistor circuit | |
JPS5235970A (en) | Driving circuit | |
JPS5325340A (en) | Audio amplifier | |
JPS538548A (en) | Current amplifier circuit | |
JPS52139347A (en) | Push-pull output circuit | |
JPS56136007A (en) | Phase inverting circuit | |
JPS52139346A (en) | Differential amplifier | |
JPS53143150A (en) | Differential amplifying circuit | |
JPS5423315A (en) | Synchronizing-separator circuit | |
FR2391621A1 (fr) | Circuit de detection pour recepteur de television en couleurs | |
JPS5278303A (en) | Fm stereo demodulation circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |