GB860690A - Improvements in frequency control means for oscillators - Google Patents
Improvements in frequency control means for oscillatorsInfo
- Publication number
- GB860690A GB860690A GB804758A GB804758A GB860690A GB 860690 A GB860690 A GB 860690A GB 804758 A GB804758 A GB 804758A GB 804758 A GB804758 A GB 804758A GB 860690 A GB860690 A GB 860690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output
- frequency
- circuit
- oscillator
- sawtooth wave
- 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
- 238000010586 diagram Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
860,690. Automatic frequency-control systems. RANK CINTEL Ltd. March 12, 1959 [March 13, 1958], No. 8047/58. Class 40 (5). A variable frequency controlled oscillator A which gives an output signal of square waveform (or comprises means for deriving such a waveform), is controlled by a circuit comprising a sawtooth wave generator B which converts the square waveform into a sawtooth signal of amplitude corresponding to the square waveform frequency, a peak rectifier C providing an output voltage of amplitude corresponding to that of the sawtooth wave, and a comparator D the two inputs of which are a reference voltage and the output voltage of the rectifier, the output of the comparator, corresponding to the sum of the inputs thereto, being applied as a control signal to the oscillator. The output frequency of the oscillator can, therefore, be varied by changing the reference voltage. In another embodiment (Fig. 2, not shown) a dividing circuit is inverted in the circuit before the sawtooth wave generator. Circuit diagrams of both embodiments are given and described (Figs. 3, 4, not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB804758A GB860690A (en) | 1958-03-13 | 1958-03-13 | Improvements in frequency control means for oscillators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB804758A GB860690A (en) | 1958-03-13 | 1958-03-13 | Improvements in frequency control means for oscillators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB860690A true GB860690A (en) | 1961-02-08 |
Family
ID=9844768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB804758A Expired GB860690A (en) | 1958-03-13 | 1958-03-13 | Improvements in frequency control means for oscillators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB860690A (en) |
-
1958
- 1958-03-13 GB GB804758A patent/GB860690A/en not_active Expired
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