36results about How to "Reduce discharge energy" patented technology

The invention discloses a two-stage limited pulse width precision electrical discharge pulse power source. In the invention, an adjustable stabilized voltage source E1 is electrically connected with acurrent-limiting resistance array R1-Rn, a forestage FET Q1 and a discharge electrode anode P+ in sequence; a backward stage FET Q2 is electrically connected with the forestage FET Q1 in series, andis electrically connected with plus-minus discharge electrodes P+ and P- in parallel; the two FETs are inverting driven by high frequency and output rising edge and failing edge of the discharge pulserespectively to realize two-stage limited pulse width and limit the min output pulse width at 60ns, thus outputting microenergy discharge pulse.

The invention discloses a partition electromagnetic compound forming method and device of a large integral panel. The method comprises the steps that S1, a board is subjected to roll bending preforming; S2, a forming mold is set, and the board is placed on the forming mold; S3, the board and the forming mold are clamped; S4, the board is provided with multiple to-deforming areas; S5, electromagnetic force is exerted to the to-deforming areas in batches from the board clamping area to the side direction, the board is extruded towards the forming mold until all the to-deforming areas are formed,and when each to-deforming area is formed, the area and the forming mold are clamped; and S6, under the condition that the board does not spring back, clamping force is unloaded. The device comprisesa roll bending set, the forming mold and a pressing block; the board is subjected to roll bending preforming on the roll bending set and then is placed on the forming mold and is clamped through thepressing block, and multiple thrust coils used for exerting electromagnetic force to the board in batches are arranged above the board. The device has the advantages of being easy and convenient to operate, high in forming precision, and capable of prolonging the part service life.

The invention discloses a pulse power supply energy transmission circuit in reciprocating wire EDM wire cutting, comprising a pulse power supply, an upper conductive block, a lower conductive block, an electrode wire, a workpiece and a host computer. The negative electrode of the pulse power supply is connected to the upper conductive block. A first relay is added between the blocks, a second relay is added between the negative electrode of the pulse power supply and the lower conductive block, the upper conductive block and the lower conductive block are respectively connected to the electrode wire, the positive electrode of the pulse power supply is directly connected to the workpiece, and the host computer By controlling the first relay and the second relay, the upper conductive block, the lower conductive block and the corresponding electrode wire are added to the circuit alternately. The invention solves the problems of equalizing the energy of the discharge points on the surface of the workpiece, equalizing the material removal amount, and the like, and relieves the problem of the waist drum degree error in the middle part.

The invention discloses a low-ozone device of an electrostatic air purifier. The low-ozone device comprises a capacitive isolator, an electrostatic adsorption structure, a tungsten filament, an electric field upper cover, an electric field lower cover and an electrode plate pressing strip. The low-ozone device of the electrostatic air purifier has the beneficial effects that the distance between terminals for fixing the tungsten filament is 124-135mm; optimal fixing points of the tungsten filament of an electrode are polarized through an electrostatic field, so that the resonance effect of the tungsten filament is greatly weakened, reduction of the charge energy of particles entering the electrostatic field is promoted, and generation of ozone is effectively reduced; the distance between a negative plate of the electric field and the tungsten filament is 6mm, and the one-time purification effect is optimal; the width of the negative plate of the electric field is 80.1-80.2mm, the width of a positive plate of the electric field is 58.7-58.8mm. Compared with the conventional negative plate of the electric field, the positive plate of the electric field and the negative plate of the electric field are widened by 30 percent, equivalent particles are removed, and the positive plate of the electric field and the negative plate of the electric field are shortened by 45 percent, so that the amount of the ozone generated by removal of the equivalent particles is obviously decreased.

A mining isolated type intrinsic safety LED driving power source comprises an input rectification filter circuit, an isolation transformer, an output filter circuit, a feedback sampling and switch tube controlling circuit and a switch tube crest voltage suppression circuit. The output side of the input rectification filter circuit is connected with the isolation transformer, the output side of the isolation transformer is connected with the output filter circuit and the feedback sampling and switch tube controlling circuit respectively, the switch tube crest voltage suppression circuit is connected with the output side of the feedback sampling and switch tube controlling circuit, the output side of the switch tube crest voltage suppression circuit is connected to the input side of the isolation transformer, and the output side of the output filter circuit is connected with an LED load. The mining isolation type intrinsic safety LED driving power source is characterized in that a passive PFC circuit is additionally arranged between the input rectification filter circuit and the isolation transformer, and a dual-output overvoltage and overcurrent protection circuit is additionally arranged between the output filter circuit and the LED load.