Abstract: A display apparatus for lighted footwear, having a spring switch, a battery-powered integrated circuit sealingly encapsulated, a plurality of illuminators, and a wiring harness connecting the illuminators to points of the integrated circuit, the integrated circuit being configured for activating the illuminators in a sequential pattern that can include repeated activation cycles when the spring switch is subjected to an effective acceleration. The display apparatus preferably includes the battery being sealingly encapsulated together with the spring switch and the integrated circuit; an ON/OFF switch can be included for selectively producing a deep sleep state of the integrated circuit that is unresponsive to the spring switch. Also disclosed is footwear incorporating the display apparatus, wherein the encapsulated enclosure is located within a sole heel portion of the shoe, and the illuminators are distributed on the footwear for external view.

Abstract: An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively. Further variations include display devices having rotating and slit patterns of illumination.

Abstract: An online monitoring system for measuring the on-state voltage drop of power semiconductor devices comprises a voltage withstanding circuit and a voltage clamping circuit, one terminal of the voltage withstanding circuit is connected to one terminal of the voltage clamping circuit, and the other terminals of the voltage withstanding circuit and the voltage clamping circuit are randomly connected to two terminals of the power semiconductor device under test (DUT) respectively. The two terminals of the voltage clamping circuit are output terminals of the online monitoring system. A clamping voltage of the voltage clamping circuit is higher than the on-state voltage drop of the DUT. When the DUT is off, the output voltage of the system is fixed to the clamping voltage, and when it is on, the output voltage is not clamped. The system has simplified structure and enables convenient, accurate and low-cost measurement of on-state voltage drop.

Abstract: An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively.

Abstract: An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively. Further variations include display devices having rotating and slit patterns of illumination.

Abstract: A display apparatus for lighted footwear, having a spring switch, a battery-powered integrated circuit sealingly encapsulated, a plurality of illuminators, and a wiring harness connecting the illuminators to points of the integrated circuit, the integrated circuit being configured for activating the illuminators in a sequential pattern that can include repeated activation cycles when the spring switch is subjected to an effective acceleration. The display apparatus preferably includes the battery being sealingly encapsulated together with the spring switch and the integrated circuit; an ON/OFF switch can be included for selectively producing a deep sleep state of the integrated circuit that is unresponsive to the spring switch. Also disclosed is footwear incorporating the display apparatus, wherein the encapsulated enclosure is located within a sole heel portion of the shoe, and the illuminators are distributed on the footwear for external view.

Abstract: An online monitoring system for measuring the on-state voltage drop of power semiconductor devices comprises a voltage withstanding circuit and a voltage clamping circuit, one terminal of the voltage withstanding circuit is connected to one terminal of the voltage clamping circuit, and the other terminals of the voltage withstanding circuit and the voltage clamping circuit are randomly connected to two terminals of the power semiconductor device under test (DUT) respectively. The two terminals of the voltage clamping circuit are output terminals of the online monitoring system. A clamping voltage of the voltage clamping circuit is higher than the on-state voltage drop of the DUT. When the DUT is off, the output voltage of the system is fixed to the clamping voltage, and when it is on, the output voltage is not clamped. The system has simplified structure and enables convenient, accurate and low-cost measurement of on-state voltage drop.

Abstract: An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively.

Abstract: A display apparatus for lighted footwear, having a spring switch, a battery-powered integrated circuit sealingly encapsulated, a plurality of illuminators, and a wiring harness connecting the illuminators to points of the integrated circuit, the integrated circuit being configured for activating the illuminators in a sequential pattern that can include repeated activation cycles when the spring switch is subjected to an effective acceleration. The display apparatus preferably includes the battery being sealingly encapsulated together with the spring switch and the integrated circuit; an ON/OFF switch can be included for selectively producing a deep sleep state of the integrated circuit that is unresponsive to the spring switch. Also disclosed is footwear incorporating the display apparatus, wherein the encapsulated enclosure is located within a sole heel portion of the shoe, and the illuminators are distributed on the footwear for external view.

Abstract: An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively.

Abstract: An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively.

Abstract: A light set circuit having first, second, and third control signal lines arranged in parallel, with pairs of LEDs connected with reverse polarity between pairs of the signal lines. In operation, control apparatus applies a control signal level between one and either of the other signal lines, the remaining control signal line being kept in a floating state for activating a selected one of the four LEDs. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively, there being three pairs of LEDs connected with reverse polarity between pairs of the signal lines for activating a selected one of the six LEDs by applying a control signal level between two of the signal lines, keeping the remaining signal line in a floating state.

Abstract: A display apparatus for lighted footwear, having a spring switch, a battery-powered integrated circuit sealingly encapsulated, a plurality of illuminators, and a wiring harness connecting the illuminators to points of the integrated circuit, the integrated circuit being configured for activating the illuminators in a sequential pattern that can include repeated activation cycles when the spring switch is subjected to an effective acceleration. The display apparatus preferably includes the battery being sealingly encapsulated together with the spring switch and the integrated circuit; an ON/OFF switch can be included for selectively producing a deep sleep state of the integrated circuit that is unresponsive to the spring switch. Also disclosed is footwear incorporating the display apparatus, wherein the encapsulated enclosure is located within a sole heel portion of the shoe, and the illuminators are distributed on the footwear for external view.

Abstract: A display apparatus for lighted footwear, having a spring switch, a battery-powered integrated circuit sealingly encapsulated, a plurality of illuminators, and a wiring harness connecting the illuminators to points of the integrated circuit, the integrated circuit being configured for activating the illuminators in a sequential pattern that can include repeated activation cycles when the spring switch is subjected to an effective acceleration. The display apparatus preferably includes the battery being sealingly encapsulated together with the spring switch and the integrated circuit; an ON/OFF switch can be included for selectively producing a deep sleep state of the integrated circuit that is unresponsive to the spring switch. Also disclosed is footwear incorporating the display apparatus, wherein the encapsulated enclosure is located within a sole heel portion of the shoe, and the illuminators are distributed on the footwear for external view.

Abstract: A display apparatus for lighted footwear, having a spring switch, a battery-powered integrated circuit sealingly encapsulated, a plurality of illuminators, and a wiring harness connecting the illuminators to points of the integrated circuit, the integrated circuit being configured for activating the illuminators in a sequential pattern that can include repeated activation cycles when the spring switch is subjected to an effective acceleration. The display apparatus preferably includes the battery being sealingly encapsulated together with the spring switch and the integrated circuit; an ON/OFF switch can be included for selectively producing a deep sleep state of the integrated circuit that is unresponsive to the spring switch. Also disclosed is footwear incorporating the display apparatus, wherein the encapsulated enclosure is located within a sole heel portion of the shoe, and the illuminators are distributed on the footwear for external view.

Abstract: A display apparatus for lighted footwear, having a spring switch, a battery-powered integrated circuit sealingly encapsulated, a plurality of illuminators, and a wiring harness connecting the illuminators to points of the integrated circuit, the integrated circuit being configured for activating the illuminators in a sequential pattern that can include repeated activation cycles when the spring switch is subjected to an effective acceleration. The display apparatus preferably includes the battery being sealingly encapsulated together with the spring switch and the integrated circuit; an ON/OFF switch can be included for selectively producing a deep sleep state of the integrated circuit that is unresponsive to the spring switch. Also disclosed is footwear incorporating the display apparatus, wherein the encapsulated enclosure is located within a sole heel portion of the shoe, and the illuminators are distributed on the footwear for external view.