Abstract:
A lamp driving structure for backlight module includes a backlight module implemented for disposing a first circuit board and a second circuit board thereon, the first circuit board couples with the second circuit board through a transmission line; the structure further includes at least a square wave controller, two square wave switches, a mutually coupled transformer, a plurality of driving transformers and a plurality of connectors disposed selectively on the first circuit board and the second circuit board, thereby reducing the number of driving transformers and connectors and the area of circuit boards to further reduce the manufacturing cost of the lamp driving device.
Abstract:
A lamp driving device with an open voltage control comprises a DC power source, a square wave switch, a square wave controller, an LC resonant circuit, a driver transformer and a current detector; wherein the square wave switch outputs a square wave signal to the LC resonant circuit, the LC resonant circuit converts the square wave signal into a sinusoidal wave signal and outputs the sinusoidal wave signal to the driver transformer, and finally the driver transformer drives the lamp and the current detector is used to detect the operation of the lamp, and, if the lamp is found open-circuit, a PWM control pin will control the square wave controller to stop the operation of the lamp driving device, thereby enhancing safety in using the lamp.
Abstract:
Disclosed is a disk based system for separating at least two types of particulates contained in a sample fluid. The system includes a disk-like carrier board and a magnetic attraction unit. The disk-like carrier board forms at least one flow channel structure, which includes an inner reservoir, at least one separation chamber, and at least one outer reservoir arranged in sequence from a geometric center of the disk-like carrier board to an outer circumferential rim of the disk-like carrier board. A method of separation carried out with the system includes introducing the sample fluid into the inner reservoir and then rotating the disk-like carrier board to induce a centrifugal force. The sample fluid contains particulates that are labeled with immunomagnetic beads and the labeled particulates are attracted by the magnetic force generated by the magnetic attraction unit to retain in the inner reservoir or the separation chamber. Particulates not labeled with the immunomagnetic beads and contained in the sample fluid move with the sample fluid to the outer reservoir.
Abstract:
A two-end driven lamp controlling device includes a direct-current (DC) power supply, square wave switches, a square wave controller, a plurality of lamps, a plurality of starting transformers and a plurality of lamps commonly connective transformers, wherein the plurality of starting transformers or the plurality of lamps commonly connective transformers are disposed besides the plurality of lamps and the square wave switches are connected to the sides of the plurality of starting transformers or the plurality of lamps commonly connective transformers and to the DC power supply and can receive signals from the square wave controller. The present invention utilizes a circuitry design of a plurality of lamps, a plurality of starting transformers and a plurality of lamps commonly connective transformers so as to make the brightness of the plurality of lamps effectively homogenized and balanced and, moreover, to solve the problem of high cost for conventional devices, which use too many components for maintaining the brightness of the lamps.
Abstract:
Disclosed is a method for separating immunomagnetic bead labeled particulates. A carrier board is formed with at least one flow channel structure, which includes an inner reservoir, an outer reservoir, and at least one micro flow channel in communication with the inner reservoir and the outer reservoir. The method includes labeling target particulates with immunomagnetic bead, introducing a sample fluid into the inner reservoir, and applying a magnetic force and a driving force, wherein the driving force drives the particulates not labeled with immunomagnetic bead to flow through the micro flow channel to the outer reservoir, while the magnetic force attracts the particulates labeled with the immunomagnetic bead to retain in the inner reservoir. The driving force may be centrifugal force, pressure, or surface tension.
Abstract:
An LCD backlight driving device with an isolating transformer comprises a DC power supply, a square wave generator, a square wave controller, said isolating transformer and a driver transformer; wherein said isolating transformer has a primary side connected to said square wave generator and a secondary side connected to said driver transformer, since said isolating transformer is placed between said square wave generator and said driver transformer, it helps to effectively shorten a safety distance required for setting up said driver transformer; the present invention uses said isolating transformer to shorten the safety distance required than that of using said driver transformer directly and to decrease an area in implementing a circuit board and to cut cost of said device.
Abstract:
Disclosed is a method for separating immunomagnetic bead labeled particulates. A carrier board is formed with at least one flow channel structure, which includes an inner reservoir, an outer reservoir, and at least one micro flow channel in communication with the inner reservoir and the outer reservoir. The method includes labeling target particulates with immunomagnetic bead, introducing a sample fluid into the inner reservoir, and applying a magnetic force and a driving force, wherein the driving force drives the particulates not labeled with immunomagnetic bead to flow through the micro flow channel to the outer reservoir, while the magnetic force attracts the particulates labeled with the immunomagnetic bead to retain in the inner reservoir. The driving force may be centrifugal force, pressure, or surface tension.
Abstract:
A coupled lamp driving device is described, comprising an alternating current (AC) power supply providing a sine-wave to two ends of each of a plurality of coupled transformers each having a primary side connected to each other at a primary side thereof and a secondary side; the plurality of coupled transformers connected to each other at the primary side thereof directing the sine-wave signal from the AC power supply to the two sides of the primary side of each of the coupled transformers and connected to an end of one of a plurality of lamps at one end of the secondary side thereof and connected to a reference level at the other end thereof, and the plurality of lamps each having the other end connected to a reference level. Since the primary sides of the coupled transformers are connected in series, a current flown on the primary side of each of the coupled transformers is equal to each other, respectively. Further, since the numbers of coils of the primary and secondary sides, respectively, are equal to each other, currents flown on the secondary side of each of the coupled transformers are also the same. Therefore, the luminance of each of the plurality of lamps can be maintained uniformly.
Abstract:
The invention discloses a feedback sampling control circuit for a lamp driving system having a feedback loop, in that the feedback sampling control circuit includes a switch and an effective current sampling controller. The switch is electrically coupled in the feedback path of the lamp driving system. The effective current sampling controller controls switching of the switch based on a voltage or current signal from a high voltage terminal of the lamp, such that an effective current actually sampled by a feedback controller in the lamp driving system is controlled so that a current component of a parasitic capacitance contained in the effective current is minimized. Thereby, the disadvantage caused by the leakage current through the parasitic capacitance can be eliminated and it is thus possible to precisely control the lamp current and to obtain a stable brightness quality.
Abstract:
Disclosed is a disk based system for separating at least two types of particulates contained in a sample fluid. The system includes a disk-like carrier board and a magnetic attraction unit. The disk-like carrier board forms at least one flow channel structure, which includes an inner reservoir, at least one separation chamber, and at least one outer reservoir arranged in sequence from a geometric center of the disk-like carrier board to an outer circumferential rim of the disk-like carrier board. A method of separation carried out with the system includes introducing the sample fluid into the inner reservoir and then rotating the disk-like carrier board to induce a centrifugal force. The sample fluid contains particulates that are labeled with immunomagnetic beads and the labeled particulates are attracted by the magnetic force generated by the magnetic attraction unit to retain in the inner reservoir or the separation chamber. Particulates not labeled with the immunomagnetic beads and contained in the sample fluid move with the sample fluid to the outer reservoir.