Oscillator/driver circuit for fluxgate magnetometer
US4384254A · kind A · utility
9Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1980 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Jun 6, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A low power expenditure oscillator/driver circuit including a transistor drive and control windings connected thereto and being operatively wound on a magnetic core suitable for use in a fluxgate magnetometer is disclosed. Its low power expenditure feature is provided, inter alia, by including an additional resistor in the base circuit of the transistor portion thereof so as to lengthen the base current pulses which permits their termination to be controlled by saturation of the magnetic core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.