116results about How to "Improve withstand voltage" patented technology

Disclosed is a method for producing a composite magnetic material which has high magnetic permeability and low core loss, while securing high insulation and high withstand voltage. A composite magnetic material produced by the method is also disclosed. Specifically, a nonmagnetic binding material containing an insulating lamellar compound is mixed with a soft magnetic metal powder, then the resulting mixture is formed into a desired shape, and then the shaped body is subjected to a heat treatment under predetermined conditions. Consequently, a thin insulating layer composed of the insulating lamellar compound is formed on the surface of the soft magnetic metal powder.

The invention discloses a manufacturing method for a high-voltage solid electrolyte aluminum electrolytic capacitor. The manufacturing method comprises the following steps: firstly, welding a core cladding on an iron bar, applying voltage for formation, and then performing cleaning and drying; secondly, immersing the dried core cladding in a dispersoid A for 1-30 minutes; thirdly, moving the core cladding out of the dispersoid A, vacuumizing the core cladding and then immersing the core cladding into the dispersoid A for 1-10 minutes; fourthly, retaining the core cladding in the dispersoid A, breaking vacuum and then pressurizing, and maintaining the immersion time for 1-10 minutes; fifthly, retaining the core cladding into the dispersoid A, deflating to normal voltage and maintaining the immersion time for 1-10 minutes; sixthly, taking out the core cladding, placing the core cladding at the temperature 65-100DEG C and drying for 20-60 minutes, placing the core cladding at the temperature of 135-165DEG C and drying for 20-60 minutes; seventhly, at least repeating the third step to the sixth step once; eighthly, placing the treated substance in a casing, sealing and performing ageing treatment, wherein the dispersoid A is a dispersoid containing conducting polymer. According to the manufacturing method, a solid-state capacitor with a lower ESR (Equivalent Series Resistance) value and a higher voltage resisting value can be obtained; meanwhile, lower leak current is obtained.

A film capacitor element is provided which has a smaller size and higher capacity while securing the sufficient withstand voltage at a high level and which can be efficiently produced. The film capacitor element including a laminated body including at least one dielectric film and at least one metal deposition film. The at least one dielectric includes at least one vapor-deposited polymer film. The at least vapor-deposited polymer film is formed by a deposition polymerization of a plurality of monomers each having a structure in which two benzene rings are linked via a linking group.

Electrons are prevented from being made incident onto an insulation part of a casing between dynodes to improve a withstand voltage. The photomultiplier tube (1) is a photomultiplier tube which is provided with substrates (20, 40) arranged so as to oppose each other, with the respective opposing surfaces (20a, 40a) made with an insulating material, a substrate (30) constituting a casing together with the substrates (20, 40), dynodes 31a to 31j arrayed on an opposing surface (40a) on the substrate (40) so as to be spaced away sequentially from a first end side to a second end side, a photocathode (22) installed so as to be spaced away from the dynode (31a) to the first end side, and an anode part (32) installed so as to be spaced away from the dynode (31j) to the second end side, in which the opposing surface (20a) of the substrate (20) is formed so as to cover the dynodes (31a to 31j), and a plurality of conductive layers (21a to 21j) set equal in potential to dynodes (31a to 31j) which are electrically independent from each other are installed at sites opposing individually the dynodes (31a to 31j) on the opposing surface (20a).

A high-voltage transformer includes a bobbin that holds a core at its center. This bobbin has eight winding grooves arrayed along the central axis of the core. A primary coil is wound around each of two outermost winding grooves with a predetermined number of turns. A secondary coil is wound around the six winding grooves near the center with a predetermined number of turns, which are distributed among these winding grooves. The cathode of a diode is connected through a terminal to one end of the secondary coil where the winding starts, while the anode of another diode is connected through another terminal to the other end of the secondary coil where winding ends.