| 摘要 |
The output of a fluidic amplifier is controlled by movement of a diaphragm with respect to the amplifier control nozzle. A permanent magnet magnetically coacts with a magnetizable portion of the diaphragm to provide a predetermined flux density to such portion. An electromagnetic coil is also positioned for magnetic interaction with the magnetizable portion of the diaphragm. When alternating current is applied to the electromagnetic coil of the transducer, the generated flux field interacts with that of the permanent magnet to change the flux field effective on the magnetizable portion. This causes the diaphragm to assume a new position with respect to the control nozzle for different current values applied to the coil, providing an output signal of the fluidic amplifier in accordance with the level of the energizing alternating current to the electromagnetic coil.
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