Guys im doing a power supply circuit using LM78XX regulator.There are 3 output voltage 12V,9V and 5V.So im using LM7812,LM7809 and LM7805 for this.I use 12V 1A center tap transformer.As i know output of this regulators are 1A by default.My question is,can i use that transformer or need to use high current such as 12V 3A to supply smoothly all 3 regulators and what is the input voltage and current range of the regulators?
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