Bread board usually forms the first step of circuit designing. A budding engineer starts about circuit construction on bread board and on this very same board; he can test a new design. It is nobody’s but the user’s responsibility to make sure that breadboard works perfectly and there are no open ends in it or the circuit simulation would never happen in the expected manner.
Using voltage regulator ICs make this circuit quite compact, which is a big benefit for this one. Interestingly, there are four different regulator ICs used in this circuit. These voltage regulator ICs are tuned to give different magnitudes of output. Different components have different power supply requirements and satisfying that is the combination of the voltage regulators used.
You can use this multi voltage power supply for the bread board projects. Most of the circuits require regulated power supply for errorless operation. This power supply can give regulated 12V, 9V, 6V and 5 V. Charger point for battery charging and Test point for LED and Buzzer are also included.