| 摘要 |
The device has two coils (2, 4) mounted in a divider circuit within a sensor, with a bridge resistance circuit (9) arranged in parallel. A different amplifier (7) has its inputs connected to the coil (2, 4) outputs and its output connected to the balance point (9) of the bridge resistance. A further amplifier (20) has its inputs connected to the coil outputs (2, 4) and a synchronisation detection circuit (22) is connected to the outputs of both amplifiers, with a re-balancing circuit (24) connected to the synchronisation detection circuit (22) and controlling the re-balancing of the bridge resistance. |
