rectifier

[bogdanfirst]

i am not sure about this rectifier schematic. is this the way i need to conect the 2 bridges and the caps to obtain simetrical voltage from a 2*12V transformer? i am not sure about the bridges, if they are conencted ok. here is the schematic.

 

[Sebi]

No need two bridge,apply this circuit. Your cct. can't work.

 

[bogdanfirst]

will it work at the full current of the bridge. i mean if i want to use only the neg or positive or both sider of the circuit at full power, 4A do i need a 8A bridge? i was thinking of using 2 4A bridges, but is it just only one 4A bridge enough. also do i have half wave rectifier or full wave rectifier?

 

[Sebi]

For 4A load both side You need 4A bridge. In the second cct. the four diodes just appear as bridge, this is two two-way rectifiers,one for +, and one for -output.
About the first cct.: this work only with independent secondary windings, no work with center tapped. Try drawing the bridges with discrete diodes,and can see the failure: two diodes connected antiparalel.

 

[bogdanfirst]

ok, thanks! now i got it!