Voltage indicator for indicating that the voltage of a battery passes a given value
US6194868A · kind A · utility
5Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2000 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Jan 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/396
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A comparator (10) compares the voltage of a battery (2) with a switchable reference voltage (Uref1A, Uref1B, 18) and supplies a signal (IS) if the voltage of the battery passes the reference voltage. The switching point of the reference voltage is defined by means of a first resistor (32). By means of the first resistor the number of cells of the battery is set to one or two. A second resistor (6) in series with the battery enables an additional voltage to be obtained in order to correct the reference voltage for the type of battery cell used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.