BR7503768A - Arranjo simetrico para formar uma resistencia de corrente alternada variavel - Google Patents
Arranjo simetrico para formar uma resistencia de corrente alternada variavelInfo
- Publication number
- BR7503768A BR7503768A BR4849/75D BR7504849D BR7503768A BR 7503768 A BR7503768 A BR 7503768A BR 4849/75 D BR4849/75 D BR 4849/75D BR 7504849 D BR7504849 D BR 7504849D BR 7503768 A BR7503768 A BR 7503768A
- Authority
- BR
- Brazil
- Prior art keywords
- current resistance
- alternate current
- symmetric arrangement
- variable
- variable alternate
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
- H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
- H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7408034.A NL161318C (nl) | 1974-06-17 | 1974-06-17 | Symmetrische inrichting voor het vormen van een regel- bare wisselstroomweerstand. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR7503768A true BR7503768A (pt) | 1976-07-06 |
Family
ID=19821555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR4849/75D BR7503768A (pt) | 1974-06-17 | 1975-06-16 | Arranjo simetrico para formar uma resistencia de corrente alternada variavel |
Country Status (14)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52153651A (en) * | 1976-06-17 | 1977-12-20 | Sony Corp | Gain changing circuit |
| US4345214A (en) | 1980-04-23 | 1982-08-17 | Rca Corporation | Variable emitter degeneration gain-controlled amplifier |
| US4833422A (en) * | 1987-09-24 | 1989-05-23 | Burr-Brown Corporation | Programmable gain instrumentation amplifier |
| DE19713571C1 (de) * | 1997-04-02 | 1998-10-01 | Telefunken Microelectron | Steuerbare Widerstandsanordnung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1320027A (fr) | 1961-10-19 | 1963-03-08 | Westinghouse Electric Corp | Potentiomètre à semi-conducteur |
-
1974
- 1974-06-17 NL NL7408034.A patent/NL161318C/xx not_active IP Right Cessation
-
1975
- 1975-01-01 AR AR259237A patent/AR205571A1/es active
- 1975-06-10 ZA ZA3735A patent/ZA753735B/xx unknown
- 1975-06-11 CA CA229,066A patent/CA1035468A/en not_active Expired
- 1975-06-12 DE DE2560093A patent/DE2560093C3/de not_active Expired
- 1975-06-12 DE DE2526309A patent/DE2526309C3/de not_active Expired
- 1975-06-13 IT IT68533/75A patent/IT1036297B/it active
- 1975-06-13 SE SE7506779A patent/SE413448B/xx not_active IP Right Cessation
- 1975-06-13 GB GB25370/75A patent/GB1519831A/en not_active Expired
- 1975-06-14 ES ES438562A patent/ES438562A1/es not_active Expired
- 1975-06-16 BR BR4849/75D patent/BR7503768A/pt unknown
- 1975-06-16 JP JP7211675A patent/JPS5329584B2/ja not_active Expired
- 1975-06-17 FR FR7518899A patent/FR2275070A1/fr active Granted
- 1975-06-17 AU AU82146/75A patent/AU499961B2/en not_active Expired
-
1979
- 1979-07-19 HK HK486/79A patent/HK48679A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1036297B (it) | 1979-10-30 |
| NL161318B (nl) | 1979-08-15 |
| ES438562A1 (es) | 1977-05-16 |
| GB1519831A (en) | 1978-08-02 |
| NL7408034A (nl) | 1975-12-19 |
| AU499961B2 (en) | 1979-05-10 |
| DE2526309B2 (de) | 1979-09-20 |
| DE2560093C3 (de) | 1982-01-28 |
| SE7506779L (sv) | 1975-12-18 |
| JPS5329584B2 (US07291463-20071106-C00074.png) | 1978-08-22 |
| SE413448B (sv) | 1980-05-27 |
| ZA753735B (en) | 1977-01-26 |
| FR2275070A1 (fr) | 1976-01-09 |
| DE2526309C3 (de) | 1980-06-04 |
| DE2526309A1 (de) | 1976-01-02 |
| DE2560093B2 (de) | 1981-04-23 |
| FR2275070B1 (US07291463-20071106-C00074.png) | 1980-03-21 |
| HK48679A (en) | 1979-07-27 |
| JPS5116885A (US07291463-20071106-C00074.png) | 1976-02-10 |
| CA1035468A (en) | 1978-07-25 |
| AU8214675A (en) | 1976-12-23 |
| AR205571A1 (es) | 1976-05-14 |
| NL161318C (nl) | 1980-01-15 |
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