Discharge indicating means for a storage battery
US4758772A · kind A · utility
9Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Jun 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is directed to a discharge indicating means for a storage battery (B) in which a choke (L) and a first transistor (T1) are connected to the storage battery via a switching device (S). The base of a second transistor (T2) arranged between the base of the first transistor (T1) and reference potential is controlled such that the circuit arrangement will start oscillating and an indicating device connected in parallel with the first transistor (T1) will light when the battery voltage (UB) has dropped below a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.