Variable resistor having resistance varying geometrically ratio and control method thereof
US9240264B2 · kind B2 · utility
2Cited by
12References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Mar 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/25
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An analog amplifier for amplifying an analog signal and an analog filter is provided. In particular, an apparatus and method for controlling gain and cutoff frequency of the variable gain amplifier and the variable cutoff frequency filter that is capable of changing the gain and cutoff frequency are provided. The variable resistor includes a plurality of resistor segments in the variable resistor and, when a plurality of resistance candidates for the variable resistor is arranged in order of size, the resistance candidates form a geometric series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.