GB620411A - Improvements in or relating to radio receivers and like electro-acoustic apparatus - Google Patents
Improvements in or relating to radio receivers and like electro-acoustic apparatusInfo
- Publication number
- GB620411A GB620411A GB21224/46A GB2122446A GB620411A GB 620411 A GB620411 A GB 620411A GB 21224/46 A GB21224/46 A GB 21224/46A GB 2122446 A GB2122446 A GB 2122446A GB 620411 A GB620411 A GB 620411A
- Authority
- GB
- United Kingdom
- Prior art keywords
- springs
- resonance frequency
- component
- mountings
- passband
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
Abstract
620,411. Springs. PHILIPS LAMPS, Ltd. July 16, 1946, No. 21224. Convention date, Sept. 3, 1942. [Class 108 (iii)] [Also in Group XL (c)] The resilient mountings provided for the components of an amplifier to reduce acoustic feedback are made more effective by locating the resonance frequency of the mountings above the passband of the amplifier and the resonance frequency of the mountings and component combined below the passband. Fig. 5 shows a component 31 mounted on springs 32, 33 and 34, 35 formed from a length of wire bent to form two arcuate arms joined and terminated by eyelets by which the springs are secured. The resonance frequency of the springs are made sufficiently high by using spring wire so thin that in operation the stress exceeds 70 per cent of the limit of fatigue. Preferably the plane of the spring arms is at right angles to the chassis and parallel to the side of the component to which it is secured.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL620411X | 1942-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB620411A true GB620411A (en) | 1949-03-24 |
Family
ID=19788410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21224/46A Expired GB620411A (en) | 1942-09-03 | 1946-07-16 | Improvements in or relating to radio receivers and like electro-acoustic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB620411A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2740097A (en) * | 1951-04-19 | 1956-03-27 | Hughes Aircraft Co | Electrical hinge connector for circuit boards |
| CN113405754A (en) * | 2021-05-28 | 2021-09-17 | 国网山东省电力公司营销服务中心(计量中心) | Vibration test fixing device and method for electric energy metering device |
-
1946
- 1946-07-16 GB GB21224/46A patent/GB620411A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2740097A (en) * | 1951-04-19 | 1956-03-27 | Hughes Aircraft Co | Electrical hinge connector for circuit boards |
| CN113405754A (en) * | 2021-05-28 | 2021-09-17 | 国网山东省电力公司营销服务中心(计量中心) | Vibration test fixing device and method for electric energy metering device |
| CN113405754B (en) * | 2021-05-28 | 2022-05-31 | 国网山东省电力公司营销服务中心(计量中心) | Vibration test fixing device and method for electric energy metering device |
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