FR2228324B1 - - Google Patents
Info
- Publication number
- FR2228324B1 FR2228324B1 FR7414971A FR7414971A FR2228324B1 FR 2228324 B1 FR2228324 B1 FR 2228324B1 FR 7414971 A FR7414971 A FR 7414971A FR 7414971 A FR7414971 A FR 7414971A FR 2228324 B1 FR2228324 B1 FR 2228324B1
- Authority
- FR
- France
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/24—Frequency- independent attenuators
- H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/08—Circuits for altering the measuring range
- G01R15/09—Autoranging circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
- G01R17/20—AC or DC potentiometric measuring arrangements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/001—Digital control of analog signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Networks Using Active Elements (AREA)
- Dc-Dc Converters (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2322558A DE2322558C3 (de) | 1973-05-04 | 1973-05-04 | Steuerbarer Spannungsteiler |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2228324A1 FR2228324A1 (fr) | 1974-11-29 |
FR2228324B1 true FR2228324B1 (fr) | 1978-01-20 |
Family
ID=5880021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7414971A Expired FR2228324B1 (fr) | 1973-05-04 | 1974-04-30 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3903434A (fr) |
DE (1) | DE2322558C3 (fr) |
FR (1) | FR2228324B1 (fr) |
GB (1) | GB1463539A (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4238724A (en) * | 1978-10-18 | 1980-12-09 | Motorola, Inc. | Pulse controlled potentiometer |
US4578772A (en) * | 1981-09-18 | 1986-03-25 | Fujitsu Limited | Voltage dividing circuit |
NL8201376A (nl) * | 1982-04-01 | 1983-11-01 | Philips Nv | Schakeling voor het versterken en/of verzwakken van een signaal. |
IT1215237B (it) * | 1985-02-20 | 1990-01-31 | Ates Componenti Elettron | Attenuatore a basso rumore ed elevata stabilita'termica,di tipo integrabile |
US4654542A (en) * | 1985-07-01 | 1987-03-31 | Gte Laboratories Incorporated | Staircase ramp voltage generating apparatus with energy reuse |
DE3813545A1 (de) * | 1988-04-22 | 1989-11-02 | Asea Brown Boveri | Messbereichsschalter zur automatischen messbereichseinstellung |
FR2714237B1 (fr) * | 1993-12-17 | 1996-01-26 | Thomson Csf Semiconducteurs | Amplificateur à gain variable. |
US6472936B1 (en) * | 2001-05-14 | 2002-10-29 | National Semiconductor Corporation | Low-noise gain switching circuit using tapped inductor |
DE10125366A1 (de) | 2001-05-23 | 2002-12-12 | Infineon Technologies Ag | dB-lineare VGA-Stufe mit hoher Bandbreite |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3470452A (en) * | 1968-03-13 | 1969-09-30 | Westinghouse Electric Corp | Regulated power supply having a tapped line transformer for providing a plurality of dc voltage levels |
US3514688A (en) * | 1968-03-28 | 1970-05-26 | United Aircraft Corp | Output-transformerless static inverter |
-
1973
- 1973-05-04 DE DE2322558A patent/DE2322558C3/de not_active Expired
-
1974
- 1974-04-30 FR FR7414971A patent/FR2228324B1/fr not_active Expired
- 1974-05-02 GB GB1921074A patent/GB1463539A/en not_active Expired
- 1974-05-03 US US466793A patent/US3903434A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2322558A1 (de) | 1974-11-21 |
DE2322558C3 (de) | 1979-03-22 |
GB1463539A (en) | 1977-02-02 |
US3903434A (en) | 1975-09-02 |
FR2228324A1 (fr) | 1974-11-29 |
DE2322558B2 (de) | 1978-07-20 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |