GB380511A - Improvements in or relating to wireless apparatus - Google Patents
Improvements in or relating to wireless apparatusInfo
- Publication number
- GB380511A GB380511A GB1775031A GB1775031A GB380511A GB 380511 A GB380511 A GB 380511A GB 1775031 A GB1775031 A GB 1775031A GB 1775031 A GB1775031 A GB 1775031A GB 380511 A GB380511 A GB 380511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- condensers
- assembly
- fine adjustment
- base
- 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
- 239000010445 mica Substances 0.000 abstract 2
- 229910052618 mica group Inorganic materials 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
- H03H7/0169—Intermediate frequency filters
- H03H7/0176—Intermediate frequency filters witout magnetic core
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
380,511. Condensers. COLLINSON, R. F., 70, The Avenue, Higham's Park, London. June 18, 1931, No. 17750. [Class 38 (ii).] A coupling unit to be tuned to a specified frequency comprises adjustable condensers adapted to be preliminarily adjusted after assembly and then fixed so that only a fine adjustment can be made. The condensers 31 comprise three springy plates 34, 37 interleaved with mica sheets and whose separation is determined by a screw 42 passing therethrough into a hole 43 in the base 10 of the unit. After assembly the screw 42 is adjusted and the member 44 with its radial arm 47 which is threaded thereon and insulated from the plates by mica washers and extends through a notched slot 48 in the base is placed in its central position and soldered to the screw allowing a fine adjustment of the capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1775031A GB380511A (en) | 1931-06-18 | 1931-06-18 | Improvements in or relating to wireless apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1775031A GB380511A (en) | 1931-06-18 | 1931-06-18 | Improvements in or relating to wireless apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB380511A true GB380511A (en) | 1932-09-19 |
Family
ID=10100558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1775031A Expired GB380511A (en) | 1931-06-18 | 1931-06-18 | Improvements in or relating to wireless apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB380511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB337787I5 (en) * | 1973-03-05 | 1975-01-28 |
-
1931
- 1931-06-18 GB GB1775031A patent/GB380511A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB337787I5 (en) * | 1973-03-05 | 1975-01-28 | ||
| US3923506A (en) * | 1973-03-05 | 1975-12-02 | Xerox Corp | Photoelectric and electrophotographic pigments comprising derivatives of condensed polycyclic aromatic hydrocarbon aldehydes |
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