An electrical connection is established between a first electrical component and a second electrical component of an assembly and a compression tool is used to apply a compression force to the assembly. The assembly also includes a metallized particle interconnect (MPI) between the first electrical component and the second electrical component and solder components outside a boundary of the MPI and extending from the first electrical component to the second electrical component. The solder components are melted by applying heat to the assembly. The solder components are solidified by cooling the assembly and the compression tool is removed.

A heating and cooling device including: an airtight processing chamber openable to load a member-to-be-processed in the airtight processing chamber; a transfer apparatus to adjust a distance between the member-to-be-processed and a cooling unit that cools the member-to-be-processed, by moving the member-to-be-processed and/or the cooling unit; an induction heating apparatus to heat the member-to-be-processed, including a induction heating coil; a cooling apparatus to cool the member-to-be-processed by cooling the cooling unit; a temperature sensor to determine a temperature of the member-to-be-processed; and a controller to control the induction heating apparatus and the cooling apparatus based on the temperature determined by the temperature sensor.

A heating device suitable for heating at least one soldered joint between an electronic component including at least a first contact mound and a printed circuit board. The soldered joint on the one hand securing the electronic component to the printed circuit board and on the other hand, while providing electrical continuity, the electronic component also having an electronic-component width, and an electronic-component thickness, wherein it includes an electrical-connection suitable for being coupled to an electrical power supply and a heater suitable for reaching a temperature at least equal to the melting point of the solder.

A heating device suitable for heating at least one soldered joint between an electronic component including at least a first contact mound and a printed circuit board. The soldered joint on the one hand securing the electronic component to the printed circuit board and on the other hand, while providing electrical continuity, the electronic component also having an electronic-component width, and an electronic-component thickness, wherein it includes an electrical-connection suitable for being coupled to an electrical power supply and a heater suitable for reaching a temperature at least equal to the melting point of the solder.

A light emitting diode (LED) tube lamp configured to receive an external driving signal includes an LED module for emitting light, the LED module comprising an LED unit comprising an LED; a rectifying circuit for rectifying the external driving signal to produce a rectified signal, the rectifying circuit having a first output terminal and a second output terminal for outputting the rectified signal; a filtering circuit connected to the LED module, and configured to provide a filtered signal for the LED unit; and a protection circuit for providing protection for the LED tube lamp. The protection circuit includes a voltage divider comprising two elements connected in series between the first and second output terminals of the rectifying circuit, for producing a signal at a connection node between the two elements; and a control circuit coupled to the connection node between the two elements, for receiving, and detecting a state of, the signal at the connection node. The control circuit includes or is coupled to a switching circuit coupled to the rectifying circuit, and the switching circuit is configured to be triggered on or off by the detected state, upon the external driving signal being input to the LED tube lamp, to allow discontinuous current to flow through the LED unit.

A light emitting diode (LED) tube lamp configured to receive an external driving signal includes an LED module for emitting light, the LED module comprising an LED unit comprising an LED; a rectifying circuit for rectifying the external driving signal to produce a rectified signal, the rectifying circuit having a first output terminal and a second output terminal for outputting the rectified signal; a filtering circuit connected to the LED module, and configured to provide a filtered signal for the LED unit; and a protection circuit for providing protection for the LED tube lamp. The protection circuit includes a voltage divider comprising two elements connected in series between the first and second output terminals of the rectifying circuit, for producing a signal at a connection node between the two elements; and a control circuit coupled to the connection node between the two elements, for receiving, and detecting a state of, the signal at the connection node. The control circuit includes or is coupled to a switching circuit coupled to the rectifying circuit, and the switching circuit is configured to be triggered on or off by the detected state, upon the external driving signal being input to the LED tube lamp, to allow discontinuous current to flow through the LED unit.

A light emitting diode (LED) tube lamp comprises: a lamp tube; a rectifying circuit, configured to rectify an input external driving signal; a filtering circuit, configured to produce a filtered signal; a driving circuit and an LED module, the driving circuit configured to receive the filtered signal in a first driving mode for driving the LED module; a mode switching circuit, configured to receive the filtered signal in a second driving mode for driving the LED module; and an auxiliary power module configured to provide auxiliary power for the LED module to emit light, wherein the mode switching circuit is on a printed circuit board and is electrically connected to the LED module on a bendable circuit sheet in the LED tube lamp, and the bendable circuit sheet is disposed below the printed circuit board to be electrically connected to the printed circuit board by soldering.

A light emitting diode (LED) tube lamp comprises: a lamp tube; a rectifying circuit, configured to rectify an input external driving signal; a filtering circuit, configured to produce a filtered signal; a driving circuit and an LED module, the driving circuit configured to receive the filtered signal in a first driving mode for driving the LED module; a mode switching circuit, configured to receive the filtered signal in a second driving mode for driving the LED module; and an auxiliary power module configured to provide auxiliary power for the LED module to emit light, wherein the mode switching circuit is on a printed circuit board and is electrically connected to the LED module on a bendable circuit sheet in the LED tube lamp, and the bendable circuit sheet is disposed below the printed circuit board to be electrically connected to the printed circuit board by soldering.

A mode switching circuit is configured to change a signal path in a light-emitting diode (LED) tube lamp and comprises: at least one switch, configured to receive a filtered signal as a driving signal to drive an LED module in the LED tube lamp to emit light, and when a frequency of an external driving signal received by the LED tube lamp is higher than a mode switching frequency, output the driving signal to the LED module. The LED tube lamp comprises an auxiliary power module coupled to provide auxiliary power for the LED module to emit light; and the mode switching circuit is on a printed circuit board and is electrically connected to the LED module on a bendable circuit sheet in the LED tube lamp, wherein the bendable circuit sheet is disposed below the printed circuit board to be electrically connected to the printed circuit board by soldering.

A mode switching circuit is configured to change a signal path in a light-emitting diode (LED) tube lamp and comprises: at least one switch, configured to receive a filtered signal as a driving signal to drive an LED module in the LED tube lamp to emit light, and when a frequency of an external driving signal received by the LED tube lamp is higher than a mode switching frequency, output the driving signal to the LED module. The LED tube lamp comprises an auxiliary power module coupled to provide auxiliary power for the LED module to emit light; and the mode switching circuit is on a printed circuit board and is electrically connected to the LED module on a bendable circuit sheet in the LED tube lamp, wherein the bendable circuit sheet is disposed below the printed circuit board to be electrically connected to the printed circuit board by soldering.