Power is the basis of the functional configuration of the circuit, the circuit must have a good design stable and reliable power supply design. There is a class of switching power supply switch is performed by a high frequency (typically official mos) is driven. Divided into two kinds of a boost and buck buck.
1.buck down circuit: circuit switch may be changed q nmos tube.
2.boost boosting circuit: vo = vi / (1-D), D is the duty cycle.
