Patent ID: 6906932

Claim:
A power supply for outputting a steady state voltage or current according to a load requirement, the power supply comprising: a power supply unit having an input end for receiving an oscillating voltage, and an output end for outputting a steady state voltage from the oscillating voltage according to a feedback signal; and a control circuit comprising: a micro-controller comprising a first input port for receiving a measuring signal from a load indicating the load requirement, and decision logic capable of generating a control voltage according to the measuring signal if the measuring signal is received and generating the control voltage according to a manual adjust signal if the measuring signal is not received; and a feedback controller having a first input end electrically connected to the output end of the power supply for receiving the steady state voltage, a second input end electrically connected to the micro-controller for receiving the control voltage from the micro-controller, and a output end for outputting the feedback signal according to the control voltage and the steady state voltage.