Abstract: A transformer failure analysis system using a programmable chip in conjunction with a shock response spectrum analysis method to distinguish inrush current and fault current of a transformer and to monitor the phase of an AC power source inputting to the transformer by a phase detector. When an inrush current occurs, the programmable chip provides a control signal to delay the phase of the AC power source being inputted into the transformer, thereby suppressing the occurrence of the inrush current. When a fault current occurs, the control signal cuts off the AC power source from the transformer until the operator has tested the whole circuit architecture to debug and correct circuit application and eliminated the internal fault.

Abstract: A transformer failure analysis system using a programmable chip in conjunction with a shock response spectrum analysis method to distinguish inrush current and fault current of a transformer and to monitor the phase of an AC power source inputting to the transformer by means of a phase detector. When an inrush current occurs, the programmable chip provides a control signal to delay the phase of the AC power source being inputted into the transformer, thereby suppressing the occurrence of the inrush current. When a fault current occurs, the control signal cuts off the AC power source from the transformer until the operator has tested the whole circuit architecture to debug and correct circuit application and eliminated the internal fault.

Abstract: A heating assembly includes two permanent magnets arranged in a spaced manner to define a path therebetween for passage of a plurality of stainless steel nails, and an inductive coil wound around an extending direction of the path in such a way that the inductive coil has a number of loops arranged along two opposite sides of the permanent magnets. Thus, when the stainless steel nails move through the path, the inductive coil can receive a low-intensity operation current to heat the stainless steel nails to a predetermined temperature.

Abstract: A pressure gauge assembly for a bicycle tire includes a gauge portion having an indicator, a shaft, and a lower portion. The shaft includes a recess and a channel portion which is in communication with the recess and the gauge portion. A button is mounted in the recess. The lower portion defines a compartment in communication with the channel portion. Two bushings, respectively, engage two ends of the compartment, and a drive member mounted with an O-ring is included in the compartment. Two holes, respectively, defined on two ends of the drive member are not in communication with each other. A protruding end is defined on an end and a insert end included in another end of the drive member. The drive member is moveable in the compartment.

Abstract: A pressure gauge assembly for a bicycle tire includes a gauge portion having an indicator, a shaft, and a lower portion. The shaft includes a recess and a channel portion which is in communication with the recess and the gauge portion. A button is mounted in the recess. The lower portion defines a compartment in communication with the channel portion. Two bushings, respectively engage two ends of the compartment, and a drive member mounted with an O-ring is included in the compartment. Two holes, respectively, defined on two ends of the drive member are not in communication with each other. A protruding end is defined on an end and a insert end included in another end of the drive member The drive member is moveable in the compartment.