NL196121A - - Google Patents
Info
- Publication number
- NL196121A NL196121A NL196121DA NL196121A NL 196121 A NL196121 A NL 196121A NL 196121D A NL196121D A NL 196121DA NL 196121 A NL196121 A NL 196121A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
- H03B5/1246—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising transistors used to provide a variable capacitance
- H03B5/125—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising transistors used to provide a variable capacitance the transistors being bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1296—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the feedback circuit comprising a transformer
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
- H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
- H03C3/145—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit by using semiconductor elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US420224A US2844795A (en) | 1954-03-31 | 1954-03-31 | Transistor reactance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL196121A true NL196121A (US07922777-20110412-C00004.png) |
Family
ID=23665579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL196121D NL196121A (US07922777-20110412-C00004.png) | 1954-03-31 |
Country Status (6)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1070694B (US07922777-20110412-C00004.png) * | 1956-10-02 | |||
| US2972120A (en) * | 1957-10-15 | 1961-02-14 | Hughes Aircraft Co | Variable-frequency crystal-controlled oscillator systems |
| US3098981A (en) * | 1958-10-10 | 1963-07-23 | Ohmega Lab | Frequency modulated crystal oscillator |
| US3060383A (en) * | 1958-12-04 | 1962-10-23 | Itt | Gain regulation circuit |
| US3148344A (en) * | 1961-03-24 | 1964-09-08 | Westinghouse Electric Corp | Adjustable resistance-capacitance band pass filter using integral semiconductor having two reverse biased junctions |
| US3319179A (en) * | 1966-03-11 | 1967-05-09 | Zenith Radio Corp | Automatic frequency controlled signal generator |
| US3375462A (en) * | 1966-10-10 | 1968-03-26 | Dominion Electrohome Ind Ltd | Frequency control transistor connected across capacitor of oscillator |
| US3611195A (en) * | 1969-09-03 | 1971-10-05 | Hughes Aircraft Co | Variable frequency oscillator and modulator circuits including colpitts transistor and feedback transistor |
| US3621473A (en) * | 1970-02-03 | 1971-11-16 | Collins Radio Co | Balanced modulator with jfet{40 s voltage controlled resistors |
| AT391965B (de) * | 1988-12-19 | 1990-12-27 | Philips Nv | Oszillator zur anspeisung einer mischstufe in einem tuner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2569347A (en) * | 1948-06-26 | 1951-09-25 | Bell Telephone Labor Inc | Circuit element utilizing semiconductive material |
| US2570938A (en) * | 1950-06-24 | 1951-10-09 | Rca Corp | Variable reactance transistor circuit |
| US2570939A (en) * | 1950-08-23 | 1951-10-09 | Rca Corp | Semiconductor reactance circuit |
| NL91981C (US07922777-20110412-C00004.png) * | 1951-08-24 | |||
| US2771584A (en) * | 1953-04-15 | 1956-11-20 | Bell Telephone Labor Inc | Frequency-controlled transistor oscillators |
-
0
- NL NL196121D patent/NL196121A/xx unknown
-
1954
- 1954-03-31 US US420224A patent/US2844795A/en not_active Expired - Lifetime
-
1955
- 1955-02-25 GB GB5730/55A patent/GB764383A/en not_active Expired
- 1955-02-25 GB GB5731/55A patent/GB764384A/en not_active Expired
- 1955-03-24 CH CH333742D patent/CH333742A/de unknown
- 1955-03-24 CH CH333743D patent/CH333743A/de unknown
- 1955-03-25 DE DEH23401A patent/DE1003288B/de active Pending
- 1955-03-31 FR FR1125522D patent/FR1125522A/fr not_active Expired
- 1955-03-31 FR FR1128964D patent/FR1128964A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH333742A (de) | 1958-10-31 |
| FR1128964A (fr) | 1957-01-14 |
| GB764384A (en) | 1956-12-28 |
| DE1003288B (de) | 1957-02-28 |
| US2844795A (en) | 1958-07-22 |
| GB764383A (en) | 1956-12-28 |
| CH333743A (de) | 1958-10-31 |
| FR1125522A (fr) | 1956-10-31 |
