32results about How to "Current balance" patented technology

A two-stage balancer for a multi-lamp backlight is electrically connected to a driving unit through a driving transformer. The two-stage balancer includes a plurality of first balancing transformers, second balancing transformers, and lighting units. Each of the first balancing transformers is electrically connected to the corresponding second balancing transformers to form a two-stage structure. In addition, a primary winding and a secondary winding of the second balancing transformer is electrically connected in series to one lighting unit, respectively, to form a circuit loop. Further, each of the circuit loops is electrically connected in parallel. Whereby the two-stage balancer provides much better current balance between the parallel circuit loops, and outputs a sinusoid-like driving current to increase lighting efficacy and further maintain uniform brightness of the multi-lamp backlight.

A single-phase electronic power saver, which is composed of a power saving device. The structure of the power saving device is: two ceramic capacitors (1) are connected in series and connected between the live wire (10) and the neutral wire (9). The capacitor (2) is connected in parallel with two ceramic capacitors (1), one end of the inductor (3) is connected to the live wire (10), and the other end of the inductor (3) is connected in series with the second resistor (6) and the first resistor (5). Connect with the zero line (9), the anode of the thyristor (4) is connected between the safety capacitor (2) and the inductor (3), the cathode of the thyristor (4) is connected between the safety capacitor (2) and the first Between the first resistor (5), the control pole of the thyristor (4) is connected between the first resistor (5) and the second resistor (6), and one end of the indicator light (7) is connected between the inductor (3) and the second resistor (6). Between the two resistors (6), the other end of the indicator light (7) is connected between the first resistor (5) and the silicon controlled rectifier (4); the single-phase electronic power saver is installed on a single-phase power supply to provide stable power supply voltage, filter transient surges, balance line current, prolong the service life of equipment, have multiple functions such as safety and power saving, and have a certain power saving effect for single-phase power consumption systems.

The invention discloses a thin power module suitable for high-frequency applications, which sequentially includes a heat-conducting bottom plate, a copper-clad substrate, and a chip, and the connection between the chip and the chip and the copper sheet is realized by bonding wires, and the front of the module is provided with an output terminal, a positive electrode and a chip. The negative power terminal and the signal terminal are set on the back of the module. The chip is divided into an upper bridge arm group and a lower bridge arm group. The upper bridge arm and the lower bridge arm are symmetrically distributed. The even-numbered power units in the arm are distributed symmetrically up and down, the positive and negative power terminals respectively adopt double pins, the pins are symmetrically arranged left and right and the two pins of each power terminal are welded symmetrically up and down on the copper sheet of the copper-clad substrate, At the same time, inside the module, the power terminals adopt a bent vertical stacked structure. The structure of the invention can reduce and equalize the distributed inductance while realizing the thinning of the power module.

The electric connector with the function of resisting spark-over includes an insulator and a central terminal, several conducting terminals, several switch terminals and a connector which are placed in the insualtor. The front end of every switch terminal possesses pick-up portion, and the pick-up portions of all switch terminals are properly spaced on the axial direction of electric connector, and the central terminal is electrically connected with connecting body, and between the switch terminal and connector there is an insulating block for separating them. When the butt-joint connected is inserted, the butt-joint connector is electrically connected with central terminal fistly, then all the switch terminals are started successively, and the connector and the conducting terminals are contacted one after another so as to implement electric connection.