IL43646A - Oscillator arrangement phase guided by reference signal - Google Patents
Oscillator arrangement phase guided by reference signalInfo
- Publication number
- IL43646A IL43646A IL43646A IL4364673A IL43646A IL 43646 A IL43646 A IL 43646A IL 43646 A IL43646 A IL 43646A IL 4364673 A IL4364673 A IL 4364673A IL 43646 A IL43646 A IL 43646A
- Authority
- IL
- Israel
- Prior art keywords
- oscillator
- frequency
- adjustment
- stages
- phase
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims 5
- 239000013078 crystal Substances 0.000 claims 1
Classifications
-
- 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
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Claims (9)
1. An oscillator whose frequency is adjustable with respect to a reference signal, wherein the oscillator includes a cryetal and at least one amplifier interconnected in a closed loop, the oscillator being free-running under control of the crystal and being maintained with its frequency between predetermined upper and lower limits, wherein a phase-shifting network is connected between a point in the closed loop and a reference potential, wherein a control network compares the oscillator output with a reference signal and adjusts the setting of the phase-shifting network in accordance with errors detected by the comparator, wherein the said adjustment is made in discrete steps, wherein when the frequency drifts to the upper limit the adjustment is such as to reduce the frequency, and wherein when the frequency drifts to the lower limit the adjustment is such as to increase the frequency.
2. An oscillator as claimed in claim 1, and wherein the phase shifting network includes an indicator in parallel with a capacitor and further capacitors any of which can be connected in parallel with the first-mentioned capacitor to effect said adjustment.
3. An oscillator as claimed in claim 2, and wherein the values of said further capacitor are in geometrical succession.
4. An oscillator according to claims 1, 2 or 3 43646-2 and wherein the oscillator frequency is adjusted by one step with each adjustment.
5. An oscillator according to claim 4, and wherein the said limits are determined by two forward-backward-counters with n stages only one of which is adjusted by one step with each frequency adjustment.
6. An oscillator according to claim 5, and wherein the output signals of the n stages of the binary counters are applied in parallel to n switching stages which control the connection of the further capacitors of the phase network via switching logic which renders active one counter at each time.
7. An oscillator according to claim 6, and wherein each of the n switching stages adjusts the frequency of the oscillator by an amount which differs from that of adjacent stages by the factor two so that 2n discrete steps are achieved.
8. An oscillator according to claim 7» and wherein n = 6.
9. An oscillator substantially as described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1675872A CH548135A (en) | 1972-11-17 | 1972-11-17 | OSCILLATOR AND PROCEDURE FOR OPERATING IT. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL43646A0 IL43646A0 (en) | 1974-03-14 |
| IL43646A true IL43646A (en) | 1976-02-29 |
Family
ID=4419965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL43646A IL43646A (en) | 1972-11-17 | 1973-11-16 | Oscillator arrangement phase guided by reference signal |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5052957A (en) |
| AU (1) | AU6249373A (en) |
| BE (1) | BE807472A (en) |
| CH (1) | CH548135A (en) |
| DE (1) | DE2357358A1 (en) |
| ES (1) | ES420459A1 (en) |
| FR (1) | FR2207389B3 (en) |
| GB (1) | GB1415105A (en) |
| IL (1) | IL43646A (en) |
| IT (1) | IT999347B (en) |
| LU (1) | LU68823A1 (en) |
| NL (1) | NL7315715A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989038A (en) * | 1982-11-12 | 1984-05-23 | Victor Co Of Japan Ltd | Phase locked loop circuit |
| WO2018024938A1 (en) * | 2016-08-05 | 2018-02-08 | Outotec (Finland) Oy | Flotation line and a method |
-
1972
- 1972-11-17 CH CH1675872A patent/CH548135A/en not_active IP Right Cessation
-
1973
- 1973-11-12 ES ES420459A patent/ES420459A1/en not_active Expired
- 1973-11-13 IT IT31239/73A patent/IT999347B/en active
- 1973-11-14 AU AU62493/73A patent/AU6249373A/en not_active Expired
- 1973-11-15 GB GB5296873A patent/GB1415105A/en not_active Expired
- 1973-11-16 NL NL7315715A patent/NL7315715A/xx unknown
- 1973-11-16 FR FR7340833A patent/FR2207389B3/fr not_active Expired
- 1973-11-16 IL IL43646A patent/IL43646A/en unknown
- 1973-11-16 JP JP48128401A patent/JPS5052957A/ja active Pending
- 1973-11-16 LU LU68823A patent/LU68823A1/xx unknown
- 1973-11-16 DE DE2357358A patent/DE2357358A1/en active Pending
- 1973-11-19 BE BE2053222A patent/BE807472A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IL43646A0 (en) | 1974-03-14 |
| CH548135A (en) | 1974-04-11 |
| IT999347B (en) | 1976-02-20 |
| FR2207389A1 (en) | 1974-06-14 |
| BE807472A (en) | 1974-05-20 |
| GB1415105A (en) | 1975-11-26 |
| NL7315715A (en) | 1974-05-21 |
| FR2207389B3 (en) | 1976-10-01 |
| JPS5052957A (en) | 1975-05-10 |
| ES420459A1 (en) | 1976-04-01 |
| LU68823A1 (en) | 1974-01-21 |
| AU6249373A (en) | 1975-05-15 |
| DE2357358A1 (en) | 1974-06-06 |
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