add LED indicator and fan to power supply
1uF EC is 10v


A 10V electrolytic on the output of a 7812 regulator is asking for trouble. Try using a 16V or higher rated voltage.

140mA through the 7812 will get it a little warm because the DC input to the 7812 will be about 15.6 volts hence its power dissipated is 3.6 volts x 0.14 amps = 0.5 watts so make sure it doesn't overheat.