What is the difference between active, passive & others(if there are any) on PSU?

I only can think of active PFC and passive PFC.

ok my dear sirs, please refer to ARP's definitive guide here..

Power Factor Correction : Correction Required!

1) its not something very important for end user. period.

Thanks. Its some industrial standard thing. Most houses have single phase. I have three phase. Nothing PFC can do about it?

Thanks. Its some industrial standard thing. Most houses have single phase. I have three phase. Nothing PFC can do about it?

u r absolutely correct!! 100% marks for u.

But I thought, since its an industrial thingy & they want to save money, they introduce PFC. So you only pay the amount of power that you use, nothing more.

r u willing to pay more for pfc psu?

no, just curious. Why do Europes make it mandatory(since they are most of the time behind others when embracing new things).
If its same price, then better

no lar.. bcos u will affect the power distribution management power distribution quality if u haf say.. many many passif power in say, ur house.. but choosing appriopriate active or passif, tehn, u can correct the power factor urself mah.. no need sesco or mafan the suckers to come to ur house install a damn capacitor to improve ur pf lor.. thats it lor. . in europoe, their country i think is bcos haf heavy industry. so they emphasis this. but no concern in our country since u can ..er.. i think i stop here. cos the rest is a bit sensitif liaw. but very interesting.

save cost-- means no need to install a C bank when u in trouble later. if u improve urself thats a way to prevent it. ya.. thats abt it. pls close this thread.

As you know there will be voltage drops over the line due to stray resistances and inductances and hence there'll be a phase angle difference there. Therefore this will result to differences between voltages between the sending side and the receiving side.

Hence, Power Factor correction is to mantain a near constant voltage between the Input and the Output side. Done usualy by adding Capacitors parrallel to the Load.

For PSU cases, I guess what it means is it gives you a more constant and stablier Voltage Rails!