Complex regulator

A complex regulator of a remote controlled car or a remote-controlled boat powered by a battery, wherein the remote-controlled car or the remote-controlled boat comprises a controller and a power output system, the complex regulator comprising:

• a power input terminal connected to the battery to receive an input voltage;
• a power output terminal providing the controller with an output voltage, which is the input voltage after being regulated;
• a switch regulator connecting the power input terminal to the power output terminal, wherein, when the input voltage arrives at a first threshold voltage, the switch regulator regulates the input voltage and conveys a first output voltage to the power output terminal;
• a linear regulator connecting the power input terminal to the power output terminal, wherein, when the input voltage arrives at a second threshold voltage, the linear regulator regulates the input voltage and conveys a second output voltage to the power output terminal, wherein the second threshold voltage is less than the first threshold voltage;
• a first diode disposed between the switch regulator and the power output terminal;
• and
• a second diode disposed between the linear regulator and the power output terminal;
• wherein, when the power output system of the remote-controlled car or the remote-controlled boat is operated under a heavy load condition and the input voltage provided by the battery is consequently reduced to a level lower than the first threshold voltage and higher than the second threshold voltage, the switch regulator stops regulating the input voltage, and the linear regulator continues regulating the input voltage to maintain a normal operation of the controller without being reset by a power interruption.