GB1497062A - Oscillators for use in ultrasonic equipment - Google Patents
Oscillators for use in ultrasonic equipmentInfo
- Publication number
- GB1497062A GB1497062A GB3223574A GB3223574A GB1497062A GB 1497062 A GB1497062 A GB 1497062A GB 3223574 A GB3223574 A GB 3223574A GB 3223574 A GB3223574 A GB 3223574A GB 1497062 A GB1497062 A GB 1497062A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- transistor
- parallel
- tertiary
- primary
- 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
- 238000004804 winding Methods 0.000 abstract 4
- 239000003990 capacitor Substances 0.000 abstract 2
- DNISEZBAYYIQFB-PHDIDXHHSA-N (2r,3r)-2,3-diacetyloxybutanedioic acid Chemical compound CC(=O)O[C@@H](C(O)=O)[C@H](C(O)=O)OC(C)=O DNISEZBAYYIQFB-PHDIDXHHSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0207—Driving circuits
- B06B1/0223—Driving circuits for generating signals continuous in time
- B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
- B06B1/0246—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal
- B06B1/0253—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal taken directly from the generator circuit
-
- 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
-
- 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
- H03B5/362—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 being a single transistor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
1497062 Transistor oscillator DAWE INSTRUMENTS Ltd 14 May 1975 [20 July 1974] 32235/74 Heading H3T An oscillator comprises a transistor 19 with the primary 16 of a transformer 15 in its collector circuit, a secondary winding 17 feeding a load 29, e.g. an ultrasonic transducer, and a tertiary winding 18 feeding back to the base via a seriesresonant circuit 24, 25, 26. The capacitor 23 across the primary is selected to ensure that the maximum of voltage across the transistor coincides with minimum current and minimum with maximum. The supply across lines 12, 13 provided by smoothed 14 diode bridge 11 biases the base via resistor 21, the swing being limited by diode 22. The load inductor 27 and/or capacitor 28 may be omitted. For higher power the circuit may use two identical oscillators (Fig. 2, not shown), the second between negative line 13 and a still more negative line, feedback series resonant circuits being coupled in parallel via a common inductor to the two tertiary windings in parallel or series, the load being across the secondaries in parallel or series. Alternatively a single transformer may be used with single secondary and tertiary and twin primary windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3223574A GB1497062A (en) | 1975-05-14 | 1975-05-14 | Oscillators for use in ultrasonic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3223574A GB1497062A (en) | 1975-05-14 | 1975-05-14 | Oscillators for use in ultrasonic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1497062A true GB1497062A (en) | 1978-01-05 |
Family
ID=10335429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3223574A Expired GB1497062A (en) | 1975-05-14 | 1975-05-14 | Oscillators for use in ultrasonic equipment |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1497062A (en) |
-
1975
- 1975-05-14 GB GB3223574A patent/GB1497062A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920514 |