Simple power supply 78L05 circuit
This circuit is very useful in beginners circuits, since most will work on 5v, which is the voltage of this easy little circuit.
This circuit is just an implementation of the 7805 integrated voltage regulator. What this little component does is to lower a voltage and stabilize it by reducing noise and ripple, in order for circuits to have the constant voltage needed to work correctly.
Link : http://electroniccircuitsforbeginners.blogspot.com
