Make 1,5 Volt Power Supply

This circuit replace power source for 1,5 volt  AAA battery or small batteries. This circuit take in power from 5 volt DC, 12 Volt DC and other. Use IC 7805 to convert 5 Volt DC,pleas see IC 7805 data sheet.

When power on and forward biased the LED's voltage drop between anode and cathode is about 1.9V and fed in series with a 1N4148 signal diode drops around 0.6V, so output this circuit 1,3 volt,  the supply is then ideal to drive peripherals with power 1,5 volt like AAA battery.