I've never tried that before. You may use a LM7805 and put a transistor so that it can handle the current that your want. LM7805 in parallel give it a try if the voltage regulator gets hot then forget about that.abhay kulkarni said:I want to make a power supply 5vdc 3 Amp.
can I use three LM7805 in parallel? will it provide output current 3 amps.?