i opened up a switch mode power supply and got the following circuit
after searching on internet on internet on how swmp works i got following idea about it
but sill there are some things that i could not understand
1. why there is a diode on output, isn't the output already rectified because as i know output is high frequency dc pulse.
2. why there are two starting diode R9 and R10 instead of single resistor
3. why there are R6 and R7 on output of transistor
4. i really don't know in detail on how snubber network, feedback system and Ring Choke Oscillator but i will search them myself so if you could only give only on what is what it would be very helpful
after searching on internet on internet on how swmp works i got following idea about it
but sill there are some things that i could not understand
1. why there is a diode on output, isn't the output already rectified because as i know output is high frequency dc pulse.
2. why there are two starting diode R9 and R10 instead of single resistor
3. why there are R6 and R7 on output of transistor
4. i really don't know in detail on how snubber network, feedback system and Ring Choke Oscillator but i will search them myself so if you could only give only on what is what it would be very helpful