GB1261240A - Current controlled oscillator circuit - Google Patents
Current controlled oscillator circuitInfo
- Publication number
- GB1261240A GB1261240A GB2191869A GB2191869A GB1261240A GB 1261240 A GB1261240 A GB 1261240A GB 2191869 A GB2191869 A GB 2191869A GB 2191869 A GB2191869 A GB 2191869A GB 1261240 A GB1261240 A GB 1261240A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator circuit
- controlled oscillator
- current controlled
- transistor
- source
- 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
Classifications
-
- 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
- H03C3/16—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 in which the active element simultaneously serves as the active element of an oscillator
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
1,261,240. Frequency modulation. HAZELTINE CORP. 30 April, 1969, No. 21918/69. Heading H3R. A crystal oscillator circuit is frequency modulated by varying the internal capacitance of an active semi-conductor device, e.g. the baseemitter capacitance of transistor 11. The transistor is the active element of an oscillator having a crystal 15 as its frequency determining circuit. The control signal is applied between the base and emitter from a source 20 connected in parallel with a capacitor 21. Either terminal of the source may be earthed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2191869A GB1261240A (en) | 1969-04-30 | 1969-04-30 | Current controlled oscillator circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2191869A GB1261240A (en) | 1969-04-30 | 1969-04-30 | Current controlled oscillator circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1261240A true GB1261240A (en) | 1972-01-26 |
Family
ID=10170991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2191869A Expired GB1261240A (en) | 1969-04-30 | 1969-04-30 | Current controlled oscillator circuit |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1261240A (en) |
-
1969
- 1969-04-30 GB GB2191869A patent/GB1261240A/en not_active Expired
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