nadiro
Member level 1

Hi everybody
I want to start working with SMPS (Switching Mode Power Supply) But I don't know how I should start.
would you please show me the way?
I prefer to start by a simple circuit and simulate it at first then I test it in practice.What is your idea?
What is the right software for simulating switching circuits?
- - - Updated - - -
Recently I found a circuit for Cell Phone Battery Charger with the output of 5V/1A. The circuit attached.

I start simulate it with Orcad(Pspice) but there was some errors which I couldn't solve them.
my problem are:
1.How I should simulate transformer?
2.I can't find the optocupler which has simulation ability in Orcad libraries.What should I do?
3.Is it important to mention the power of resistors and voltage of electrolytic capacitors in simulation? If yes, How?
I want to start working with SMPS (Switching Mode Power Supply) But I don't know how I should start.
would you please show me the way?
I prefer to start by a simple circuit and simulate it at first then I test it in practice.What is your idea?
What is the right software for simulating switching circuits?
- - - Updated - - -
Recently I found a circuit for Cell Phone Battery Charger with the output of 5V/1A. The circuit attached.

I start simulate it with Orcad(Pspice) but there was some errors which I couldn't solve them.
my problem are:
1.How I should simulate transformer?
2.I can't find the optocupler which has simulation ability in Orcad libraries.What should I do?
3.Is it important to mention the power of resistors and voltage of electrolytic capacitors in simulation? If yes, How?