SherlockBenedict
Member level 4
What do you mean by isolating the ground? How will it protect the circuit? I couldn't understand that concept for a long time.
I am quite confused with the working of flyback converter. In the on state I understand that current flows through the inductor in the primary coil but no current should flow through the inductor of the secondary coil because the diode is reversed biased, right? Okay now when you open the switch then no current flows through the inductor in the primary coil and this means that infinite or huge voltage should appear across the primary coil and also initially zero current should flow through the inductor in the secondary coil (at t=0) but a huge voltage would also appear across the secondary coil at the same time. Somewhere I am wrong so please help me in understanding the concept behind flyback converter.
Also here's one sentence that I came across while reading about flyback converters in wikipedia-
"Also there is a need for a controlling rail which has to be loaded before load is applied to the uncontrolled rails, this is to allow the PWM to open up and supply enough energy to the transformer."
What do you mean by "rail" and "controlling rail"?
Thanks in advance.
- - - Updated - - -
I have one more important doubt. Transformer doesn't couple DC but how could this couple for flyback converter? Confusing please help me.
Waiting for your reply people
I am quite confused with the working of flyback converter. In the on state I understand that current flows through the inductor in the primary coil but no current should flow through the inductor of the secondary coil because the diode is reversed biased, right? Okay now when you open the switch then no current flows through the inductor in the primary coil and this means that infinite or huge voltage should appear across the primary coil and also initially zero current should flow through the inductor in the secondary coil (at t=0) but a huge voltage would also appear across the secondary coil at the same time. Somewhere I am wrong so please help me in understanding the concept behind flyback converter.
Also here's one sentence that I came across while reading about flyback converters in wikipedia-
"Also there is a need for a controlling rail which has to be loaded before load is applied to the uncontrolled rails, this is to allow the PWM to open up and supply enough energy to the transformer."
What do you mean by "rail" and "controlling rail"?
Thanks in advance.
- - - Updated - - -
I have one more important doubt. Transformer doesn't couple DC but how could this couple for flyback converter? Confusing please help me.
Waiting for your reply people