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ماژول ارزیابی امنیت استاتیک آنلاین با استفاده از شبکههای عصبی مصنوعی
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Construction of Pulse Transformer
The general construction of pulse transformer are quite similar to that of the power transformers.
But some special improvement or modification is provided.
As they are used in sophisticated electronics applications, therefore the design of that transformers should carried out in such a way, that they can minimize the effects of signal distortion.
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Open-Circuit (or No-Load) Test
Here one winding is open-circuited and voltage—usually, rated voltage at rated frequency–is applied to the other winding. Voltage, current, and power at the terminals of this winding are measured. The open circuit voltage of the second winding is also measured, and from this measurement a check on the turns ratio can be obtained. It is usually convenient to apply the test voltage to the winding that has a voltage rating equal to that of the available power source. In step-up voltage transformers, this means that the open-circuit voltage of the second winding will be higher than the applied voltage, sometimes much higher. Care must be exercised in guarding the terminals of this winding to ensure safety for test personnel and to prevent these terminals from getting close to other electrical circuits, instrumentation, grounds, and so forth.
In presenting the no-load parameters obtainable from test data, it is assumed that voltage is applied to the primary and the secondary is open-circuited. The no-load power loss is equal to the wattmeter reading in this test; core loss is found by subtracting the ohmic loss in the primary, which is usually small and may be neglected in some cases. Thus, if Po, Io and Vo are the input power, current, and voltage, then the core loss is given by:
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