Abstract
DC Power Supply is the electronic technology indispensable equipment, as well as electronic circuits and electronic technology experiment used power equipment, usually ask for adjustable output voltage.
This Power Regulator takes Freescale’s MCU MC9S08AW32 as core to make the voltage controllable. Its voltage’s stepping is Lower than 0.05V .It has the function of voltage test and current test ,and its output voltage and output current can be digital- displayed by four LEDs. In order to make the power works more efficiently and more stably, it use SWITCHER DC-DC and LDO,so that the maximum volume of output current can reaches at 2A, moreover it equips with overcurrent protection circuit to protect the power efficiently.Switch adopts rotary rype endcoders with two model of rough adjustment and minor adjustment.