GB1436815A - Reed resonance filters for audio frquencies - Google Patents
Reed resonance filters for audio frquenciesInfo
- Publication number
- GB1436815A GB1436815A GB2161174A GB2161174A GB1436815A GB 1436815 A GB1436815 A GB 1436815A GB 2161174 A GB2161174 A GB 2161174A GB 2161174 A GB2161174 A GB 2161174A GB 1436815 A GB1436815 A GB 1436815A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reed
- polepiece
- audio
- frequency
- frame
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/48—Coupling means therefor
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
1436815 Reed filters LGZ LANDIS & GYR ZUGAG 15 May 1974 [29 June 1973] 21611/74 Heading H3U An audio-frequency reed-resonance filter comprises a reed 11 carrying a ferromagnetic frame member 12 which surrounds an air gap 2 in a soft iron core 1 to which signals from network terminals 5, 6 are supplied by a coil 3. Reed 11 is mounted on the polepiece 9 of a permanent magnet 8, the polepiece having a bifurcated end whose arms, Fig. 2, are disposed adjacent the sides of air gap 2. Alternatively the polepiece arms and the frame 12 may form closed loops. The filter may be used in ripple control equipment associated with an electrical power supply network. The coil 3 is tuned to the audio control frequency by a capacitor 4 and when the reed 11 and frame 12 resonate at this frequency, a mechanical or an electrical output may be obtained therefrom. The reed 11 may be coupled to a further reed in a similar filter arrangement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH947773A CH559474A5 (en) | 1973-06-29 | 1973-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1436815A true GB1436815A (en) | 1976-05-26 |
Family
ID=4352402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2161174A Expired GB1436815A (en) | 1973-06-29 | 1974-05-15 | Reed resonance filters for audio frquencies |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5034439A (en) |
| AT (1) | AT328546B (en) |
| CH (1) | CH559474A5 (en) |
| DE (1) | DE2344997C3 (en) |
| FR (1) | FR2235635A7 (en) |
| GB (1) | GB1436815A (en) |
-
1973
- 1973-06-29 CH CH947773A patent/CH559474A5/xx not_active IP Right Cessation
- 1973-09-04 DE DE19732344997 patent/DE2344997C3/en not_active Expired
-
1974
- 1974-05-15 GB GB2161174A patent/GB1436815A/en not_active Expired
- 1974-06-06 JP JP6451874A patent/JPS5034439A/ja active Pending
- 1974-06-12 AT AT489174A patent/AT328546B/en not_active IP Right Cessation
- 1974-06-26 FR FR7422211A patent/FR2235635A7/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2344997B2 (en) | 1978-10-05 |
| ATA489174A (en) | 1975-06-15 |
| AT328546B (en) | 1976-03-25 |
| CH559474A5 (en) | 1975-02-28 |
| DE2344997A1 (en) | 1975-01-16 |
| DE2344997C3 (en) | 1979-06-07 |
| JPS5034439A (en) | 1975-04-02 |
| FR2235635A7 (en) | 1975-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |