* Question
| How is the noise generated by the transformer itself generated? |
* Answer
| Since the core is used in the transformer, the inductance and resistance of the winding are nonlinear, so it cannot be analyzed by a method similar to the previous one.Generally, it can only be used for qualitative analysis. If quantitative analysis is required, it must be carried out by means of measurement.The distributed capacitance of the windings and the stray capacitance of the wiring affect the high frequency end of the passband.The inductance of the winding is non-linear, which is affected by the magnetic permeability of the core, and the magnetic permeability is related to the winding current, whether the core has remanence, and the filling factor of the core lamination.In order to reduce this effect, when making the transformer, the core and the fasteners should be properly pressed and vacuum immersed.In addition, the core and its fasteners should be demagnetized. |
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