GB879824A - Autopolarization of electrostrictive transducers - Google Patents
Autopolarization of electrostrictive transducersInfo
- Publication number
- GB879824A GB879824A GB43525/59A GB4352559A GB879824A GB 879824 A GB879824 A GB 879824A GB 43525/59 A GB43525/59 A GB 43525/59A GB 4352559 A GB4352559 A GB 4352559A GB 879824 A GB879824 A GB 879824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- transducer
- electrostrictive
- source
- autopolarization
- 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
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 abstract 1
- 229910002113 barium titanate Inorganic materials 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
- H01G7/025—Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric
- H01G7/026—Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric with ceramic dielectric
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/802—Circuitry or processes for operating piezoelectric or electrostrictive devices not otherwise provided for, e.g. drive circuits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
879,824. Electrostatic machines; voltage multipliers. GENERAL ULTRASONICS CO. Dec. 22, 1959, No. 43525/59. Classes 35 and 38 (2). A D.C. biasing voltage to maintain prepolarization of an electrostrictive vibrator is derived from the A.C. energizing supply, and is proportional to it. As shown in Fig. 1, an A.C. source 10 charges the electrodes 13, 14 of an electrostrictive transducer 11, e.g. of barium titanate, in the same sense (determined by a rectifier 15) as the transducer's remanent polarization. In this arrangement the charge is at substantially the peak voltage of the source, as it is in a modification (Fig. 4, not shown), but a voltage doubler circuit, Fig. 5, or a cascade arrangement which quadruples the peak voltage (Fig. 6, not shown) may be employed. The biasing voltage causes the transducer to operate at a favourable part of its " hysteresis " loop, where losses are small and above the point of remanence.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US773692A US3072805A (en) | 1958-11-13 | 1958-11-13 | Autopolarization of electrostrictive transducers |
| GB43525/59A GB879824A (en) | 1959-12-22 | 1959-12-22 | Autopolarization of electrostrictive transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB43525/59A GB879824A (en) | 1959-12-22 | 1959-12-22 | Autopolarization of electrostrictive transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB879824A true GB879824A (en) | 1961-10-11 |
Family
ID=10429131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB43525/59A Expired GB879824A (en) | 1958-11-13 | 1959-12-22 | Autopolarization of electrostrictive transducers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB879824A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2427660A1 (en) * | 1978-05-29 | 1979-12-28 | Philips Nv | DEVICE FOR CONTROL OF A PIEZO-ELECTRIC POSITIONING ELEMENT |
| FR2456365A1 (en) * | 1979-05-07 | 1980-12-05 | Sony Corp | Remanent deflection cancelling device for piezoceramic head support - has max. magnitude of oscillating signal less than largest magnitude of tracking control signal |
-
1959
- 1959-12-22 GB GB43525/59A patent/GB879824A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2427660A1 (en) * | 1978-05-29 | 1979-12-28 | Philips Nv | DEVICE FOR CONTROL OF A PIEZO-ELECTRIC POSITIONING ELEMENT |
| FR2456365A1 (en) * | 1979-05-07 | 1980-12-05 | Sony Corp | Remanent deflection cancelling device for piezoceramic head support - has max. magnitude of oscillating signal less than largest magnitude of tracking control signal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB972806A (en) | Sonic generation | |
| GB1344635A (en) | Transducers | |
| JPS5342591A (en) | Langevin type ultrasonic vibrator unit | |
| GB1159423A (en) | Improvements in or relating to Electromechanical Delay Devices | |
| GB1002514A (en) | Vibratory feeder | |
| GB879824A (en) | Autopolarization of electrostrictive transducers | |
| GB1030878A (en) | Free running multi-vibrator transistor circuit | |
| GB1028059A (en) | A signal generating arrangement for an electric typewriter and similar apparatus | |
| SE7602263L (en) | ELECTROSTATIC DUST SEPARATOR | |
| GB1521151A (en) | Acoustic transducer | |
| GB973842A (en) | Improvements in and relating to piezoelectric potential generating devices | |
| JPS554150A (en) | Remote controller using sound wave as medium | |
| JPS5337395A (en) | Driving method of electrostrictive type transducers | |
| GB1046161A (en) | Improvements in electrically powered watches | |
| GB890146A (en) | Improvements in exploders | |
| GB804694A (en) | Improvements in or relating to electromechanical oscillators | |
| NL6608020A (en) | ||
| GB908408A (en) | Improvements relating to audible signal apparatus | |
| GB939272A (en) | Retentive memory circuit | |
| GB798997A (en) | Improvements in and relating to oscillation generators employing transistors | |
| SU364074A1 (en) | ||
| CA534927A (en) | Piezoelectric transducer using lead titanate and lead zirconate | |
| GB911746A (en) | Improvements in shot exploders | |
| SU432525A1 (en) | TIME-PULSE MULTI-PURPOSE DEVICE | |
| GB1228936A (en) |