Patent ID: 7554368

Claim:
A frequency adjusting circuit for a central processing unit (CPU), comprising: a transforming unit for transforming a change of a current signal of the CPU into a voltage signal, the transforming unit comprising a primary induction coil and a secondary induction coil, the primary induction coil and the secondary induction coil each comprising a positive terminal and a negative terminal, the positive terminal of the primary induction coil connected to a power supply, the negative terminal of the primary induction coil connected to the CPU, and the negative terminal of the secondary coil grounded; an amplifying unit for amplifying the voltage signal from the transforming unit; a switching unit being turned on or turned off by the amplified voltage signal from the amplifying unit, the switching unit outputting a control signal according to the amplified voltage signal; and a basic input/output chip receiving the control signal to regulate a frequency of the CPU through a clock generator connected between the basic input/output chip and the CPU.