IE43049L - Microphone mounting - Google Patents
Microphone mountingInfo
- Publication number
- IE43049L IE43049L IE761806A IE180676A IE43049L IE 43049 L IE43049 L IE 43049L IE 761806 A IE761806 A IE 761806A IE 180676 A IE180676 A IE 180676A IE 43049 L IE43049 L IE 43049L
- Authority
- IE
- Ireland
- Prior art keywords
- microphone
- resonator
- resonators
- protective plate
- protective housing
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/013—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for obtaining desired frequency or temperature coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
When calibrating mechanical resonators, consisting of a ferromagnetic material, for electromechanical filters by means of a sand blasting or laser erosion device, the resonators are excited into mechanical oscillations via the alternating field of a coil and the frequency of the oscillations of the resonators is measured with the aid of a microphone. To obtain an interference-free microphone output voltage which is as high as possible, the microphone (4) must be arranged in the area of the first anti-node of the air column located between resonator (1) and microphone, and thus closely adjacently to the resonator. To reduce the great wear of the microphone (4) and of the excitation coil (3), which therefore occurs during the calibration process due to reflected sand grains or ejected particles of material, a closed protective housing (9) is provided which exhibits a removable protective plate (5) consisting of insulating material and facing the holder for the resonator (1). Inside the protective housing (9), a sleeve (7) enclosing the microphone (4) and protruding with one end through a hole in the protective plate (5) and displaceable for moving this end close to the resonator (1) is arranged. Two ferrite core pieces (6) are guided through the protective plate (5). The excitation coil can be displaced inside the protective housing (9) so that its core (11) comes to rest against the two core pieces (6). <IMAGE>
[GB1534605A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2543128A DE2543128C3 (en) | 1975-09-26 | 1975-09-26 | Coil and microphone holder for a frequency adjustment device for mechanical resonators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE43049L true IE43049L (en) | 1977-03-26 |
| IE43049B1 IE43049B1 (en) | 1980-12-03 |
Family
ID=5957597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE1806/76A IE43049B1 (en) | 1975-09-26 | 1976-08-16 | Improvements in or relating to electrical winding and microphone mountings |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS5832802B2 (en) |
| AT (1) | AT356710B (en) |
| BE (1) | BE846587A (en) |
| BR (1) | BR7606369A (en) |
| CA (1) | CA1080343A (en) |
| CH (1) | CH609505A5 (en) |
| CS (1) | CS208191B2 (en) |
| DE (1) | DE2543128C3 (en) |
| DK (1) | DK143009C (en) |
| ES (1) | ES451815A1 (en) |
| FR (1) | FR2326076A1 (en) |
| GB (1) | GB1534605A (en) |
| GR (1) | GR60578B (en) |
| HU (1) | HU172595B (en) |
| IE (1) | IE43049B1 (en) |
| IL (1) | IL50277A (en) |
| IT (1) | IT1068347B (en) |
| LU (1) | LU75494A1 (en) |
| NL (1) | NL168095C (en) |
| PT (1) | PT65647B (en) |
| YU (1) | YU225676A (en) |
| ZA (1) | ZA764967B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1587123A (en) * | 1976-11-12 | 1981-04-01 | Emi Ltd | Measuring arrangements for electrical signals |
-
1975
- 1975-09-26 DE DE2543128A patent/DE2543128C3/en not_active Expired
-
1976
- 1976-07-29 LU LU75494A patent/LU75494A1/xx unknown
- 1976-07-30 CH CH974176A patent/CH609505A5/en not_active IP Right Cessation
- 1976-08-06 GB GB32914/76A patent/GB1534605A/en not_active Expired
- 1976-08-12 AT AT599876A patent/AT356710B/en not_active IP Right Cessation
- 1976-08-16 CA CA259,134A patent/CA1080343A/en not_active Expired
- 1976-08-16 IL IL50277A patent/IL50277A/en unknown
- 1976-08-16 IE IE1806/76A patent/IE43049B1/en unknown
- 1976-08-18 ZA ZA764967A patent/ZA764967B/en unknown
- 1976-09-02 FR FR7626495A patent/FR2326076A1/en active Granted
- 1976-09-15 YU YU02256/76A patent/YU225676A/en unknown
- 1976-09-20 CS CS766080A patent/CS208191B2/en unknown
- 1976-09-21 IT IT27439/76A patent/IT1068347B/en active
- 1976-09-24 PT PT65647A patent/PT65647B/en unknown
- 1976-09-24 BR BR7606369A patent/BR7606369A/en unknown
- 1976-09-24 NL NL7610623A patent/NL168095C/en not_active IP Right Cessation
- 1976-09-24 HU HU76SI00001542A patent/HU172595B/en unknown
- 1976-09-24 JP JP51114571A patent/JPS5832802B2/en not_active Expired
- 1976-09-24 DK DK432576A patent/DK143009C/en active
- 1976-09-24 ES ES451815A patent/ES451815A1/en not_active Expired
- 1976-09-24 BE BE170940A patent/BE846587A/en unknown
- 1976-09-25 GR GR51780A patent/GR60578B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LU75494A1 (en) | 1977-03-03 |
| FR2326076A1 (en) | 1977-04-22 |
| ZA764967B (en) | 1977-07-27 |
| IL50277A0 (en) | 1976-10-31 |
| JPS5242349A (en) | 1977-04-01 |
| AU1710476A (en) | 1977-11-17 |
| PT65647B (en) | 1978-04-07 |
| ES451815A1 (en) | 1977-11-01 |
| YU225676A (en) | 1982-05-31 |
| AT356710B (en) | 1980-05-27 |
| DK143009C (en) | 1981-10-19 |
| NL168095C (en) | 1982-02-16 |
| NL7610623A (en) | 1977-03-29 |
| PT65647A (en) | 1976-10-01 |
| IL50277A (en) | 1979-03-12 |
| JPS5832802B2 (en) | 1983-07-15 |
| FR2326076B1 (en) | 1978-11-03 |
| BR7606369A (en) | 1977-05-31 |
| DE2543128B2 (en) | 1977-07-21 |
| GR60578B (en) | 1978-06-28 |
| DK143009B (en) | 1981-03-09 |
| HU172595B (en) | 1978-10-28 |
| CS208191B2 (en) | 1981-08-31 |
| IE43049B1 (en) | 1980-12-03 |
| DE2543128C3 (en) | 1978-03-16 |
| NL168095B (en) | 1981-09-16 |
| DE2543128A1 (en) | 1977-03-31 |
| CA1080343A (en) | 1980-06-24 |
| ATA599876A (en) | 1979-10-15 |
| GB1534605A (en) | 1978-12-06 |
| BE846587A (en) | 1977-01-17 |
| CH609505A5 (en) | 1979-02-28 |
| IT1068347B (en) | 1985-03-21 |
| DK432576A (en) | 1977-03-27 |
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