I need to charge my car battery, hence I would like to assemble an 12V external charger unit. Please give me the ratting of transformer, rectifier circuit and regulator to assemble the components.

Regards,
Sivaram,
Coimbatore - India.

Building the circuit - Step Two (http://www.instructables.com/id/DIY-Lead-Acid-Battery-Charger/step7/Building-the-circuit-Step-Two/)