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A ferrite core pulse transformer provided with 12V PWM signal (as primary winding input voltage) as shown in Fig-1, produces irregular output voltage across the secondary winding as shown in Fig-2. I dont know why the ferrite core pulse transformer is doing like this; is it due to saturation of ferrite core pulse transformer or maybe low inductance of transformer primary winding? Pulse transformer winding ratio is 1:1 enter image description here

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    \$\begingroup\$ The longer your pulse the more like DC it becomes. Transformers don't output DC. \$\endgroup\$ – Transistor Oct 24 '19 at 15:46
  • \$\begingroup\$ I have added a capacitor in series with the transformer primary winding to black DC voltage \$\endgroup\$ – Dr. Umar Tabrez Shami Oct 24 '19 at 15:48
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    \$\begingroup\$ Core saturation. Apply Vt=NAB. What B do you med up with? \$\endgroup\$ – winny Oct 24 '19 at 15:54
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    \$\begingroup\$ A transformer is effectively a high-pass filter. \$\endgroup\$ – Hearth Oct 24 '19 at 16:00
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    \$\begingroup\$ If you have a manufactured pulse transformer, you also have a parameter: voltage product V*s, this means 12V multiplied by max. pulse width time. It's what @winny wants to tell you. The problem is the core saturation. \$\endgroup\$ – Marko Buršič Oct 25 '19 at 5:16

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