IT947543B - Perfezionamenti agli oscillatori a quarzo - Google Patents
Perfezionamenti agli oscillatori a quarzoInfo
- Publication number
- IT947543B IT947543B IT20532/72A IT2053272A IT947543B IT 947543 B IT947543 B IT 947543B IT 20532/72 A IT20532/72 A IT 20532/72A IT 2053272 A IT2053272 A IT 2053272A IT 947543 B IT947543 B IT 947543B
- Authority
- IT
- Italy
- Prior art keywords
- quartz oscillators
- oscillators
- quartz
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
- G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
-
- 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
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H03B5/364—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device the amplifier comprising field effect transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
- H03K3/354—Astable circuits
- H03K3/3545—Stabilisation of output, e.g. using crystal
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7105365A FR2126956B1 (it) | 1971-02-17 | 1971-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT947543B true IT947543B (it) | 1973-05-30 |
Family
ID=9072035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT20532/72A IT947543B (it) | 1971-02-17 | 1972-02-14 | Perfezionamenti agli oscillatori a quarzo |
Country Status (6)
Country | Link |
---|---|
US (1) | US3753154A (it) |
CH (1) | CH555112A (it) |
DE (1) | DE2207262A1 (it) |
FR (1) | FR2126956B1 (it) |
GB (1) | GB1376065A (it) |
IT (1) | IT947543B (it) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4704587A (en) * | 1986-12-04 | 1987-11-03 | Western Digital Corporation | Crystal oscillator circuit for fast reliable start-up |
US5909152A (en) * | 1997-02-28 | 1999-06-01 | Texas Instruments Incorporated | Low power CMOS crystal oscillator circuit |
US6278336B1 (en) | 1998-02-27 | 2001-08-21 | Texas Instruments Incorporated | Low-current oscillator with hysteresis input buffer |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3568091A (en) * | 1969-02-26 | 1971-03-02 | Hamilton Watch Co | Astable multivibrator using two complementary transistor pairs |
US3585527A (en) * | 1969-10-27 | 1971-06-15 | Suisse Pour L Ind Horlogere Sa | Oscillator circuit including a quartz crystal operating in parallel resonance |
-
1971
- 1971-02-17 FR FR7105365A patent/FR2126956B1/fr not_active Expired
-
1972
- 1972-02-02 US US00222778A patent/US3753154A/en not_active Expired - Lifetime
- 1972-02-14 IT IT20532/72A patent/IT947543B/it active
- 1972-02-16 DE DE19722207262 patent/DE2207262A1/de active Pending
- 1972-02-16 CH CH222672A patent/CH555112A/fr not_active IP Right Cessation
- 1972-02-16 GB GB727372A patent/GB1376065A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH555112A (fr) | 1974-10-15 |
FR2126956B1 (it) | 1974-03-22 |
GB1376065A (en) | 1974-12-04 |
US3753154A (en) | 1973-08-14 |
DE2207262A1 (de) | 1972-08-31 |
FR2126956A1 (it) | 1972-10-13 |
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