Direct current bias inductor inductance value test circuit
The invention provides a direct-current bias inductor inductance value test circuit, which is used for measuring the inductance value of an inductor to be measured under a direct-current bias condition, and is characterized by comprising a direct-current source, a first switching tube, the inductor...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a direct-current bias inductor inductance value test circuit, which is used for measuring the inductance value of an inductor to be measured under a direct-current bias condition, and is characterized by comprising a direct-current source, a first switching tube, the inductor to be measured, a hollow coil, a current-limiting resistor and a fly-wheel diode, the hollow coil and the inductor to be measured are electrically connected to form an inductance branch, and the inductance branch, the freewheeling diode and the current-limiting resistor are connected in series to form a freewheeling loop; the inductance branch is connected in series with the direct current source and the first switch tube to form a first loop; according to the direct current bias inductor inductance value test circuit, when a first loop works, the inductance value of an inductor to be tested is obtained according to the inductance value of an air-core coil, the voltage of the air-core coil and the voltage of the in |
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