Abstract: A circuit breaker and a power supply system. The circuit breaker is disposed between a direct current power source and a load, the circuit breaker includes a first coil, a second coil, a switch unit, and a driver, where the switch unit and the driver form a linkage connection. The direct current power source is coupled to a first end of the first coil and a first end of the second coil, both a second end of the first coil and a second end of the second coil are coupled to one end of the switch unit, and the other end of the switch unit is coupled to the load. Inductive reactance of the first coil is less than inductive reactance of the second coil.

Abstract: A terminal includes control logic to control a phase-locked loop to output a spread-spectrum clocking signal. The control logic controls the generation of the spread-spectrum clocking signal by adjusting at least one parameter of the phase-locked loop. The parameter may be a charge pump setting or a loop-filter capacitance of the phase-locked loop, or their digital equivalents. Adjustment of the parameter reduces a predetermined portion of a communications spectrum. The predetermined portion may be located within a range of frequencies allocated to a specific channel, and reduction of the spectrum in this range may serve to reduce noise associated with clocking harmonics.

Abstract: A terminal includes control logic to control a phase-locked loop to output a spread-spectrum clocking signal. The control logic controls the generation of the spread-spectrum clocking signal by adjusting at least one parameter of the phase-locked loop. The parameter may be a charge pump setting or a loop-filter capacitance of the phase-locked loop, or their digital equivalents. Adjustment of the parameter reduces a predetermined portion of a communications spectrum. The predetermined portion may be located within a range of frequencies allocated to a specific channel, and reduction of the spectrum in this range may serve to reduce noise associated with clocking harmonics.