GB1420779A - Variable voltage dividers - Google Patents
Variable voltage dividersInfo
- Publication number
- GB1420779A GB1420779A GB1220473A GB1220473A GB1420779A GB 1420779 A GB1420779 A GB 1420779A GB 1220473 A GB1220473 A GB 1220473A GB 1220473 A GB1220473 A GB 1220473A GB 1420779 A GB1420779 A GB 1420779A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collector
- areas
- resistive film
- terminal
- dispersion
- 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
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
1420779 Variable resistors WELWYN ELECTRIC Ltd 15 Feb 1974 [14 March 1973] 12204/73 Heading HIS A variable resistor comprises a resistive film la, which has terminal areas 7, 8, and a collector 11 which is connected by a path 12a to a third terminal area 12, each of the areas 7, 8, 12 and the collector 11 being formed of a dispersion of conductive material in a non-conductive medium. The substrate 1 is of ceramic or glass. In a first embodiment the areas 7, 8, 12, the collector 11 and the path 12a are all formed of the same material as the resistive film la which comprises tin oxide and antimony oxide particles in a glass matrix. A hole 14 receives the carrier of a rotary wiper (17, Fig. la, not shown) which engages an arcuate portion 2 of film la. Each terminal pin 20 passes through a respective hole 9, 10, 13 and washer 24 with a locating tongue 25, and the end 22 of the pin is swaged over. To adjust the resistance of the film la portions 5, 6 may be removed, for example by abrasion. In a second embodiment the resistive film is a dispersion of a noble metal, e.g. ruthenium in a glass matrix. The terminal areas and the collector are formed of conductive plastics material, e.g. a dispersion of carbon particles in an epoxy resin. A path of resistive film material may be interposed between the collector and its corresponding terminal area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1220473A GB1420779A (en) | 1973-03-14 | 1973-03-14 | Variable voltage dividers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1220473A GB1420779A (en) | 1973-03-14 | 1973-03-14 | Variable voltage dividers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1420779A true GB1420779A (en) | 1976-01-14 |
Family
ID=10000251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1220473A Expired GB1420779A (en) | 1973-03-14 | 1973-03-14 | Variable voltage dividers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1420779A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4492950A (en) * | 1983-03-01 | 1985-01-08 | American Plasticraft Company | Variable resistance assembly with improved contactor knob |
| US4527147A (en) * | 1982-04-30 | 1985-07-02 | Murata Manufacturing Co., Ltd. | High voltage variable resistor with improved central slider contact construction |
-
1973
- 1973-03-14 GB GB1220473A patent/GB1420779A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4527147A (en) * | 1982-04-30 | 1985-07-02 | Murata Manufacturing Co., Ltd. | High voltage variable resistor with improved central slider contact construction |
| US4492950A (en) * | 1983-03-01 | 1985-01-08 | American Plasticraft Company | Variable resistance assembly with improved contactor knob |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |