Monitoring device for the proper operation of lamps particularly in motor vehicles
US4234878A · kind A · utility
10Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1978 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | Jun 23, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q11/005
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A monitoring device for the orderly functioning of lamps, particularly in motor vehicles, with a circuit control element arranged in the circuit of the lamps, on which control element a control signal occurs during switching-on of the lamps, as well as with circuit components in a signal circuit, the latter being applied with the control signal. In the circuit of each lamp there is arranged a low impedance resistor, and the low impedance resistor is connected with an input of an amplifier circuit arrangement. An indicator device is connected to the output of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.