GB1254636A - An electrical selector switch - Google Patents
An electrical selector switchInfo
- Publication number
- GB1254636A GB1254636A GB21957/69A GB2195769A GB1254636A GB 1254636 A GB1254636 A GB 1254636A GB 21957/69 A GB21957/69 A GB 21957/69A GB 2195769 A GB2195769 A GB 2195769A GB 1254636 A GB1254636 A GB 1254636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- control knob
- potentiometer
- positions
- adjusted
- 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
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
- H03J1/066—Constructional details regarding potentiometric setting of voltage or current variable reactances
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
1,254,636. Tuning selector arrangements. INTERNATIONAL STANDARD ELECTRIC CORP. 30 April, 1969 [4 May, 1968], No. 21957/69. Addition to 1,243,638. Heading H3Q. [Also in Division H1] A selector switch as claimed in claim 1 of parent Specification 1,243,638, includes a further switch 14 having a plurality of switch positions adapted to be operated by a plurality of presettable operating devices 5, each operating device 5 being adjustable to one of its preset conditions to operate the further switch to one of its positions when the control knob 3 of the selector is operated to a respective one of its switching positions. The control knob 3 has a disc 9 attached at one end with injection moulded bearing bushes 11 spaced in a ring around the disc 9. Square cross-section cams 5 each with a projecting pin 13 are mounted in these bearing bushes 11. The pin 13 operates a waveband switch 14 by moving a slide carrying contacts which engage fixed contacts 16 printed on to an insulating support 18. When the control knob 3 is in one of its six stable positions as determined by a detent mechanism 24, the cam 5 associated with this position, can be adjusted by pressing and rotating switch adjuster knob 7 so that the wave range switch is adjusted by altering the position of the pin 13. The associated tuning means 2 may be adjusted by pressing and rotating circuit adjuster knob 4 which adjusts the potentiometer spindle 29 of the tuning means. Six of these potentiometers are provided one for each stable position of the control knob 3, a printed circuit resistance track (19, Fig. 5, not shown), being provided for each potentiometer. The contacts attached to the wave range switch slider 15 may be contact springs (Figs. 8 and 9, not shown). Pointer type dials may be coupled to the spindle type potentiometer 29. The frequency range set by the wave range switch 14 may be indicated by channel numbers marked on a transparent plate fixed to the slider 15 of the switch 14 and visible through windows 30 on a front panel 31 just above the pointers of the spindle type potentiometer.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681766325 DE1766325A1 (en) | 1968-05-04 | 1968-05-04 | Tuning arrangement for storable station selection in television receivers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1254636A true GB1254636A (en) | 1971-11-24 |
Family
ID=5698883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21957/69A Expired GB1254636A (en) | 1968-05-04 | 1969-04-30 | An electrical selector switch |
Country Status (4)
Country | Link |
---|---|
US (1) | US3601722A (en) |
DE (1) | DE1766325A1 (en) |
GB (1) | GB1254636A (en) |
NL (1) | NL6906791A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3792387A (en) * | 1973-01-26 | 1974-02-12 | Gte Sylvania Inc | Pushbutton tuning system |
FR2223937B1 (en) * | 1973-03-29 | 1978-03-24 | Telemecanique Electrique | |
NL169808C (en) * | 1974-10-14 | 1982-08-16 | Philips Nv | FREQUENCY SELECTOR WITH FREEWHEEL COUPLING. |
DE2549781A1 (en) * | 1975-11-06 | 1977-05-18 | Ruf Kg Wilhelm | TUNING UNIT WITH BAND SWITCH FOR HIGH FREQUENCY RECEIVER |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2934964A (en) * | 1958-04-25 | 1960-05-03 | Gen Electric | Fine tuning mechanism |
US3433081A (en) * | 1966-10-17 | 1969-03-18 | Motorola Inc | Tuner mechanism |
US3438273A (en) * | 1967-10-12 | 1969-04-15 | Zenith Radio Corp | Vhf/uhf tuning mechanism for a television receiver |
-
1968
- 1968-05-04 DE DE19681766325 patent/DE1766325A1/en active Pending
-
1969
- 1969-04-04 US US813454A patent/US3601722A/en not_active Expired - Lifetime
- 1969-04-30 GB GB21957/69A patent/GB1254636A/en not_active Expired
- 1969-05-02 NL NL6906791A patent/NL6906791A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NL6906791A (en) | 1969-11-06 |
DE1766325A1 (en) | 1971-12-23 |
US3601722A (en) | 1971-08-24 |
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