Linearly adjustable logarithmic output current sensing resistance system and method
US6985342B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2003 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Jan 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A resistance network is provided for synthesizing a non-linear logarithmic response in the resistance of the network comprising a potentiometer from the change of the resistance of the potentiometer. The network additionally comprises a set of resistors. The potentiometer allows the resistance of the network to be varied, while the network manipulates the current in such a fashion that the input current required to produce a desired output voltage is a linear function of the resistance of the potentiometer. Incorporated into a current overload detection circuit, this allows an even spacing of the desired trip current settings about the dial of the potentiometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.