| 摘要 |
FIELD: engineering of electro-dynamic transformers for receiving sound signals. ^ SUBSTANCE: electro-dynamic microphone contains body, membrane and at least one inductance coil rigidly connected to membrane. Ferrite rod is positioned in the body coaxially to inductance coil, aforementioned rod not being a constant magnet, while inductance coil is provided with measuring circuit and is connected to alternating-current power source. ^ EFFECT: increased sensitivity of microphone. ^ 8 cl, 5 dwg |
