Abstract: A linear motor includes a magnet seat, a magnet unit, a coil seat and a coil unit. The magnet unit is disposed on the magnet seat, and includes a plurality of magnet sets each including two magnets. The coil unit is disposed on the coil seat, and includes a plurality of coil sets each including two coils. The magnets of each of the magnet sets are aligned with each other in a direction different from that in which the coils of each of the coil sets are aligned.

Abstract: A circuit board for testing and a method of operating the same are provided. A relay is installed on a body of a circuit board having a probe. At least one external conductive line is arranged between the probe and the relay. During high-frequency signal testing, a transmission route is to transmit high-frequency signals to a test machine by means of the external conductive line, but is not to transmit high-frequency signals to a test machine by means of the relay. Accordingly, the limitation of the bandwidth condition of the relay can be avoided.

Abstract: A bridgeless interleaved power factor corrector is used to convert an AC power source into a DC power source. The bridgeless interleaved power factor corrector includes a first conversion circuit, a second conversion circuit, a first power switch, a second power switch, a positive-half control switch, and a negative-half control switch. The first power switch is coupled to one of two positive-half operation units of the first conversion circuit and one of two negative-half operation units of the second conversion circuit. The second power switch is coupled to the other one of two positive-half operation units and the other one of two negative-half operation units. The positive-half control switch is coupled between a neutral end and a ground end, and the negative-half control switch is coupled between a line end and the ground end.

Abstract: A single stage low boost/buck ratio stand-alone solar energy power generating circuit with a system thereof is a simplification of a two-stage type circuit. The two-stage circuit, which has a storage unit, a charging converter circuit for charging the storage unit, and a discharging converter circuit for discharging the stored power to a load, is analyzed and categorized such that a circuit structure is selected via a suitable simplified combination to commonly use the elements constituting the charging and the discharging converter circuits so as to form the single stage circuit with less elements, volume and weight for reducing the production cost of the circuit.

Abstract: A method and a circuit for tracking maximum power of a photo-voltaic array performs the operation of load increase/decrease with a preset current difference and determines if the photo-voltaic array operates at zone A or zone B based on change of the output voltage before and after the operation to decide the next operation being for load increase or load decrease. It is not necessary for tracking the maximum power with the multiplier to estimate the output power of the photo-voltaic array. Therefore, the circuit for tracking the maximum power of the photo-voltaic array is capable of being simplified and joined to the pulse width modulation circuit to form an integrated circuit with a function of tracking the maximum power.

Abstract: A method and a circuit for tracking maximum power of a photo-voltaic array performs the operation of load increase/decrease with a preset current difference and determines if the photo-voltaic array operates at zone A or zone B based on change of the output voltage before and after the operation to decide the next operation being for load increase or load decrease. It is not necessary for tracking the maximum power with the multiplier to estimate the output power of the photo-voltaic array. Therefore, the circuit for tracking the maximum power of the photo-voltaic array is capable of being simplified and joined to the pulse width modulation circuit to form an integrated circuit with a function of tracking the maximum power.

Abstract: A single stage low boost/buck ratio stand-alone solar energy power generating circuit with a system thereof is a simplification of a two-stage type circuit. The two-stage circuit, which has a storage unit, a charging converter circuit for charging the storage unit, and a discharging converter circuit for discharging the stored power to a load, is analyzed and categorized such that a circuit structure is selected via a suitable simplified combination to commonly use the elements constituting the charging and the discharging converter circuits so as to form the single stage circuit with less elements, volume and weight for reducing the production cost of the circuit.

Abstract: A multi-channel poultry stunner with current sharing feature comprises at least two electrodes connected to at least one poultry and a current sharing circuit connected to the electrodes and a stunning voltage. The current sharing circuit generates at least four sets of dither voltages applied onto the poultry via the electrodes. The poultry is stunned by a stunning current generated on the poultry by the dither voltages and the stunning voltage. The advantages of small size and light weight can be accomplished, and very good conversion efficiency can be achieved. Moreover, a stunning current with current sharing feature can be produced to enhance poultry carcass quality.

Abstract: A multi-channel poultry stunner with current sharing feature comprises at least two electrodes connected to at least one poultry and a current sharing circuit connected to the electrodes and a stunning voltage. The current sharing circuit generates at least four sets of dither voltages applied onto the poultry via the electrodes. The poultry is stunned by a stunning current generated on the poultry by the dither voltages and the stunning voltage. The advantages of small size and light weight can be accomplished, and very good conversion efficiency can be achieved. Moreover, a stunning current with current sharing feature can be produced to enhance poultry carcass quality.

Abstract: A self-sourcing exercise bike with a linear digital control magnetic resistance braking apparatus comprises a generator, a power converter, a digital control system, a magnetic braking resistance and a LED control panel. This apparatus uses a linear control method to control the change of the magnetic resistance, and the magnetic resistance braking apparatus uses a method of changing inductance and a controlling way thereof to achieve the goal of controlling the variation of the magnetic resistance braking force. This bike makes the user or rehabilitant to linearly adjust the resistance force or torque according to the speed of the exercise bike and the presetting resistance force, and easily start up the power system in the initial stage.

Abstract: An electric energy auxiliary device of transdermal drug delivery patch is provided which includes an upper electrode, a lower electrode, and a drug storage area between two electrodes, generating a kinetic energy in the pharmaceutical compound in the drug storage area toward the skin by a electric field between two electrodes. For the pharmaceutical compound with the same polarity, the pharmaceutical compound is pushed by the electric energy interacted with polar the pharmaceutical compound so as to deliver the drug the human body. The lower electrode generates an ion channel with electroporation on the surface of skin. By using the change of electric field on the surface of skin, a temporary ion channel is generated in the cells where the pharmaceutical compound enters the systemic circulation of human body via skin. This temporary ion channel allows large compound to pass into the skin of human body.