Guys i have a question regarding the schematic shown on the above link. The above link shows the schematic diagram of iWatt 1810 power supply. I want to know that why they connect a inductor with the resistance after the bridge rectifier.What is the purpose of connecting such a components.Is it used to limit the current or something I missing.
I want to let you know that i am new in this field and i don't have enough knowledge. I am not electronic genius so please help me in solving such a stuff...
Maybe the designer has put this resistor as a damper for possible resonant oscillations in the rectifier output pi filter that C5, L1 and C2 (and bead inductor) form. Because if you combine the capacitors, essentially you get one parallel RLC circuit in which the damping factor \[\zeta=\frac{1}{2R} \sqrt{ \frac{L}{C} }\] is inversely proportional to the resistor value. Just a guess of course.
Ahh...... I don't know but your answer makes me little doubtful and confuse. What is the requirement of using (If talking about the RLC combination) in this circuit?Does it makes any sense??If yes then please elaborate as may be I am not getting what you want to say