US3855564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage divider assembly with thick film resistance elements
Assignee: AMERICAN PLASTICRAFT Co
•
Filing: 1973-07-05
•
Granted: 1974-12-17
•
Expires: 1993-07-05
Abstract
Abstract An assembly including a variable resistance comprising a resistive thick film for providing a variable voltage dividing function. The thick film is connectable across a source of voltage. A rotor mounted to make slidable contact with the thick film, provides an adjustable output voltage; and, the assembly includes a rectifier means for providing a feedback control voltage through the rectifier to the film.
Inventors
- 👤 C Dumas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:56
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A variable voltage divider comprising an electrically nonconductive substrate, a plurality of conductive terminations supported on a surface of said substrate, a resistive path supported on said surface and electrically connected at its ends to respective conductive terminations, a first conductive connector supported on said surface and having one end electrically connected to a intermediate point on said resistive path, a center conductive collector supported on said surface, adjusting means supported for movement relative to the substrate, a conductive contactor constrained to move with the adjusting means to wipingly engage the resistive path and the conductive collector, a second conductive connector having one end connected to the collector, rectifier means having one electrode connected to said first conductive connector and the other electrode connected to the conductive contactor and the collector to thereby provide a variation in the output voltage and a feedback control voltage bias.
Claim 2
Dependent Claim
146 words
A variable voltage divider comprising an electrically nonconductive substrate, a plurality of conductive terminations supported on a surface of said substrate, a resistive path supported on said surface and electrically connected at its ends to respective conductive terminations, a first conductive connector supported on said surface and having one end electrically connected to a intermediate point on said resistive path, a center conductive collector supported on said surface, adjusting means supported for movement relative to the substrate, a conductive contactor constrained to move with the adjusting means to wipingly engage the resistive path and the conductive collector, a second conductive connector having one end connected to the collector, rectifier means having one electrode connected to said first conductive connector and the other electrode connected to the conductive contactor and the collector to thereby provide a variation in the output voltage and a feedback control voltage bias.
Claim 3
Dependent Claim
26 words
A variable voltage divider as in claim 1 further including at least one capacitor connected to said rectifier means to filter the voltage appearing there across.
Claim 4
Dependent Claim
17 words
A variable voltage divider as in claim 1 wherein said conductive collector comprises a thick film resistance.
Claim 5
Dependent Claim
34 words
A variable volage divider as in claim 2 wherein a conductive termination is connected to the junction of the capacitor and the rectifier means with the moveable connector to provide a selected output voltage.
References Cited (Backward Citations)
US3585559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |