Abstract:
A protection assembly with an operating knob (1) for an electrical potentiometer comprises a substantially tubular housing (2) defining a longitudinal axis (L), an electrical adjustment device (3) held within the housing (2) and having an adjustment shaft (4) rotating about the longitudinal axis (L) and an internal variable resistor interacting with a longitudinal end (5) of the shaft (4), an operating knob (6) attached to the other end (7) of the shaft (4), limit stop means (8) for restricting the rotation of the shaft (4) within a predetermined maximum angle of rotation (a). The knob (6) comprises an annular anchoring member (9), which is designed to be removably coupled to the housing (2) and an operating member (1 0) coupled to the shaft (4) and rotating relative to the anchoring member (9). The anchoring member (9) and the operating member (10) have mutually facing cylindrical surfaces (11, 12), with said limit stop means (8) interposed therebetween to limit the infiltration of external impurities.
Abstract:
The invention relates to an electrical component with a base (1), at least two connecting elements (4, 5) linked with the base (1), an intermediate layer (6) disposed on the surface of the base (1), and a protective layer (7) disposed on the intermediate layer (6). The intermediate layer (6) and the protective layer (7) are produced from the same solvent-containing starting material, with the intermediate layer (6) having a lower solvent content than the protective layer (7). The invention further relates to a method for producing such a component. It is especially advantageous to apply the intermediate layer (6) by spraying it onto the heated base (1) of the component, thereby increasing the voltage stability of the PTC thermistor.
Abstract:
Dargestellt und beschrieben ist ein Überspannungsschutzelement mit einem Gehäuse, mit Anschlüssen (2, 3) zum elektrischen Anschluss des Überspannungsschutzelements (1) an den zu schützenden Strom- oder Signalpfad, mit zwei im Inneren des Gehäuses angeordneten und elektrisch parallel geschalteten Varistoren (4, 5) und mit einer zumindest teilweise zwischen den Varistoren (4, 5) angeordneten Mittenelektrode (6), wobei das Gehäuse zwei aus Metall bestehende, elektrisch miteinander verbundene Gehäusehälften (7, 8) aufweist, wobei die Mittenelektrode (6) gegenüber den Gehäusehälften (7, 8) isoliert ist und mit ihren einander gegenüberliegenden Seiten jeweils elektrisch mit einem ersten Anschlussbereich (9, 10) eines Varistors (4, 5) verbunden ist, und wobei die beiden Varistoren (4, 5) und die Mittenelektrode (6) sandwichartig zwischen den beiden Gehäusehälften (7, 8) angeordnet sind. Das erfindungsgemäße Überspannungsschutzelement ist dadurch besonders einfach und kostengünstig aufgebaut und montierbar, und weist einen möglichst niedrigen Schutzpegel auf, dass die eine Gehäusehälfte (8) als Deckel ausgebildet ist, der einen Deckabschnitt (10) und einen zurückspringenden Eingriffsabschnitt (11) aufweist, wobei im verbundenen Zustand der beiden Gehäusehälften (7, 8) der Eingriffsabschnitt (11) in den von der anderen Gehäusehälfte (7) gebildeten korrespondierenden Aufnahmeraum (12) eingreift und der Deckabschnitt (10) den Aufnahmeraum (12) überdeckt, dass die beiden Gehäusehälften (7, 8) derart ausgebildet und miteinander verbindbar sind, dass im verbundenen Zustand zwischen den beiden Gehäusehälften (7, 8) eine Sichtfuge (13) vorhanden ist, wobei die Breite (B) der Sichtfuge (13) in Abhängigkeit von der Dicke der beiden Varistoren (4, 5) variiert, die maximale Breite (B) der Sichtfuge (13) jedoch kleiner als die korrespondierende Erstreckung des Eingriffsabschnitts (11) der als Deckel ausgebildeten Gehäusehälfte (8) ist.
Abstract:
A fabric sleeve and hybrid yarn filament used in construction of the sleeve for protecting elongate members against at least one of EMI, RFI or ESD, and methods of construction of the sleeve and hybrid yarn filament. The sleeve includes at least one interlaced hybrid yarn filament having a non-conductive filament and at least one conductive wire filament overlying an outer surface of the non-conductive filament. The hybrid yarn filament is arranged in electrical communication with itself or other hybrid yarn filaments to provide uniform shielding against EMI, RFI, and/or ESD.
Abstract:
The invention relates to an electrical component with a base (1), at least two connecting elements (4, 5) linked with the base (1), an intermediate layer (6) disposed on the surface of the base (1), and a protective layer (7) disposed on the intermediate layer (6). The intermediate layer (6) and the protective layer (7) are produced from the same solvent-containing starting material, with the intermediate layer (6) having a lower solvent content than the protective layer (7). The invention further relates to a method for producing such a component. It is especially advantageous to apply the intermediate layer (6) by spraying it onto the heated base (1) of the component, thereby increasing the voltage stability of the PTC thermistor.
Abstract:
A lightning arrester comprises a housing; a mainbody partially mounted in the housing; an encapsulation cap mounted at a first end of the housing; and an elastic apparatus compressed between the encapsulation cap and the mainbody. In the lightning arrester, the encapsulation cap comprises a circular base mounted at the first end of the housing and a mounting portion formed at a substantial center of the base. A first end of the elastic apparatus is mounted in the mounting portion, and a second thereof is abutted against the mainbody. In the lightning arrester, a reliable electrical connection may be arrived. By the pressure relief apparatus, electronic devices and accessories of the lightning arrester may be prevented from being damaged by escaped substance generated during the lightning arrester exploding.
Abstract:
The invention relates to a high voltage surge arrester (10) comprising insulating polymer housing (30) with a protruding shed (40). The shed (40) has an upper shed surface (50) that forms a blunt angle (55) with the longitudinal axis (z) of the surge arrester (10) and a lower shed surface (60, 70). Said lower shed surface comprises an inner portion (60) that forms an essentially right angle (65) with said axis (z) and an outer portion (70) that forms an acute angle (75) with said axis (z). Further the invention relates to an apparatus for moulding an electrically insulating polymer housing.
Abstract:
The invention relates to a voltage surge protector, consisting of a plurality of varistors connected in a column, an upper electrode connected to the upper edge of the column of varistors, a lower electrode connected to the lower edge of the column of varistors, an insulating housing that surrounds the column of varistors, a fiberglass cover that surrounds the insulating housing and a weatherproof protective cover provided with barriers mounted on the fiberglass cover. The protector has a mechanism to release pressure during a voltage surge, which consists of a hole in a transversal direction for each varistor of the column of varistors inside the insulating housing, the holes being helicoidally distributed along the length of the housing of insulating material and of a depth less than the thickness of the insulating housing.
Abstract:
본 발명은 클리어 컴파운드 에폭시로 몰딩한 MIT 소자 및 그것을 포함하는 화재 감지 장치에 관한 것이다. 본 발명의 실시 예에 따른 화재 감지 장치는 전원 제어 장치로부터 전원을 공급받는다, 상기 화재 감지 장치는 MIT 칩을 클리어 컴파운드 에폭시로 몰딩한 MIT 소자; 상기 전원 제어 장치로부터 전원을 공급받고, 무극성 전원을 제공하기 위한 다이오드 브릿지 회로; 상기 다이오드 브릿지 회로로부터 무극성 전원을 공급받고, 상기 MIT소자로부터의 감지 신호에 응답하여 화재 경보를 알리기 위한 표시 회로; 및 상기 감지 신호를 일정 기간 동안 유지하기 위한 안정화 회로를 포함한다.
Abstract:
The invention relates to an overvoltage protection element, comprising a housing, connections (2, 3) for electrically connecting the overvoltage protection element (1) to the current path or signal path to be protected, two varistors (4, 5) arranged inside the housing and electrically connected in parallel, and a center electrode (6) arranged at least partially between the varistors (4, 5), wherein the housing has two housing halves (7, 8) made of metal and electrically connected to each other, wherein the center electrode (6) is isolated from the housing halves (7, 8) and is electrically connected at the opposite sides of the electrode to a first connection area (9, 10) of a varistor (4, 5), and wherein the two varistors (4, 5) and the center electrode (6) are sandwiched between the two housing halves (7, 8). The overvoltage protection element according to the invention is constructed and can be assembled in a simple and low-cost manner, and has the lowest possible protection level, in that one housing half (8) is designed as a cover, which has a covering section (10) and a recessed engagement section (11), wherein in the installed state of the two housing halves (7, 8) the engagement section (11) engages in the corresponding receiving space (12) formed by the other housing half (7) and the covering section (10) covers the receiving space (12), and in that the two housing halves (7, 8) are designed and can be connected to each other in such a way that in the installed state a visible gap (13) is present between the two housing halves (7, 8), wherein the width (B) of the visible gap (13) varies according to the thickness of the two varistors (4, 5), but the maximum width (B) of the visible gap (13) is less than the corresponding extent of the engagement section (11) of the housing half (8) designed as a cover.