What is the impact of magnets used in pulse transformer iron core
What is the impact of magnets used in pulse transformer iron core?
Pulse transformer is used to transmit pulse transformer.
When a series of pulse duration t d (
Voltage, pulse amplitude to U m (
Single pulse voltage is added to the number of turns for N pulse transformer winding, at the end of each pulse, the magnetic induction intensity increment & Delta;
To: & Delta;
B = U m t d / NS c ′
2 which S is the cross-sectional area of core c (
The magnetic induction intensity increment & Delta;
And the area of the pulse voltage (B
Is proportional to the.
When the output one-way pulse, & Delta;
m - B = B
B r, if add the demagnetization winding on pulse transformer core, & Delta;
B = B m + B r。
Under pulse condition, by the dynamic pulse hysteresis loop & Delta;
B with the corresponding & Delta;
The ratio of H p for pulse magnetic permeability m p.
The ideal pulse waveform is refers to the rectangular pulse wave, because of the influence of the parameters of the circuit, the actual pulse waveform with rectangular pulse, often the distortion.
Such as the rise time of pulse edge and pulse transformer leakage inductance L s t r, winding and structural parts caused by distributed capacitance C s is proportional to the pulse roof fall is inversely proportional to the excitation inductance L, m, L and eddy current loss factors can also affect the output pulse waveform.
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