JPH0467368B2 - - Google Patents
Info
- Publication number
- JPH0467368B2 JPH0467368B2 JP58056050A JP5605083A JPH0467368B2 JP H0467368 B2 JPH0467368 B2 JP H0467368B2 JP 58056050 A JP58056050 A JP 58056050A JP 5605083 A JP5605083 A JP 5605083A JP H0467368 B2 JPH0467368 B2 JP H0467368B2
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- circuit
- resistor
- input
- current mirror
- 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
Links
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/46—One-port networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/24—Frequency-independent attenuators
Landscapes
- Networks Using Active Elements (AREA)
- Filters And Equalizers (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58056050A JPS59181811A (ja) | 1983-03-31 | 1983-03-31 | 可変抵抗回路 |
EP84103428A EP0123909B1 (en) | 1983-03-31 | 1984-03-28 | Variable resistance circuit |
DE8484103428T DE3479948D1 (en) | 1983-03-31 | 1984-03-28 | Variable resistance circuit |
US06/595,438 US4540896A (en) | 1983-03-31 | 1984-03-30 | Variable resistance circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58056050A JPS59181811A (ja) | 1983-03-31 | 1983-03-31 | 可変抵抗回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59181811A JPS59181811A (ja) | 1984-10-16 |
JPH0467368B2 true JPH0467368B2 (US06256357-20010703-M00001.png) | 1992-10-28 |
Family
ID=13016252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58056050A Granted JPS59181811A (ja) | 1983-03-31 | 1983-03-31 | 可変抵抗回路 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4540896A (US06256357-20010703-M00001.png) |
EP (1) | EP0123909B1 (US06256357-20010703-M00001.png) |
JP (1) | JPS59181811A (US06256357-20010703-M00001.png) |
DE (1) | DE3479948D1 (US06256357-20010703-M00001.png) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3835378A1 (de) * | 1988-10-18 | 1990-04-19 | Telefunken Electronic Gmbh | Rc-tiefpassschaltung |
DE69017936T2 (de) * | 1989-04-17 | 1995-08-31 | Seiko Epson Corp | Treiber für einen Tintenstrahldrucker. |
FR2667703A1 (fr) * | 1990-10-05 | 1992-04-10 | Philips Composants | Source de courant a rapport donne entre courant de sortie et d'entree. |
JPH0529845A (ja) * | 1991-07-25 | 1993-02-05 | Rohm Co Ltd | カレントミラー回路 |
EP0697150B1 (en) * | 1994-03-07 | 1999-12-29 | Koninklijke Philips Electronics N.V. | Adjustable resistance device with control circuit |
KR100442858B1 (ko) * | 1997-11-18 | 2004-09-18 | 삼성전자주식회사 | 테스트 회로의 자동 저항 변환 장치 및 방법 |
CN100362741C (zh) * | 2003-11-11 | 2008-01-16 | 浙江中控技术有限公司 | 数字式变阻装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3761741A (en) * | 1972-06-21 | 1973-09-25 | Signetics Corp | Electrically variable impedance utilizing the base emitter junctions of transistors |
GB1568056A (en) * | 1975-10-31 | 1980-05-21 | Dolby Laboratories Inc | Electrically variable impedance ciruits |
US4339677A (en) * | 1979-12-21 | 1982-07-13 | Signetics Corporation | Electrically variable impedance circuit with feedback compensation |
JPS59125115A (ja) * | 1982-12-30 | 1984-07-19 | Sony Corp | 可変時定数回路 |
-
1983
- 1983-03-31 JP JP58056050A patent/JPS59181811A/ja active Granted
-
1984
- 1984-03-28 EP EP84103428A patent/EP0123909B1/en not_active Expired
- 1984-03-28 DE DE8484103428T patent/DE3479948D1/de not_active Expired
- 1984-03-30 US US06/595,438 patent/US4540896A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0123909B1 (en) | 1989-09-27 |
EP0123909A3 (en) | 1986-09-10 |
DE3479948D1 (en) | 1989-11-02 |
JPS59181811A (ja) | 1984-10-16 |
US4540896A (en) | 1985-09-10 |
EP0123909A2 (en) | 1984-11-07 |