SLOUPARNAMAJDAL electrical components Germany SLOUPARNAMAJDAL model SLOUPARNAMAJDAL price

SLOUPARNAMAJDAL electrical components are tools that can accurately determine and measure temperature, divided into pointer thermometers and digital thermometers. Depending on the temperature-sensing substance used and the temperature measurement range, there are kerosene thermometers, alcohol thermometers, mercury thermometers, gas thermometers, resistance thermometers, thermocouple thermometers, radiation thermometers and optical thermometers, bimetallic thermometers, etc. Digital thermometers can accurately determine and measure temperature, displaying it digitally rather than with a pointer or mercury. Hence they are called digital thermometers or digital temperature gauges.

SLOUPARNAMAJDAL electrical component principle

Mainly consists of an LC circuit composed of capacitors and inductors, producing free oscillation through the mutual conversion of electric field energy and magnetic field energy. To maintain oscillation, an amplifier circuit with positive feedback is also required. LC oscillators are further divided into transformer-coupled and three-point oscillators. Many applications use quartz crystal oscillators, and there are also LC oscillators composed of integrated operational amplifiers. Since component parameters cannot be exactly identical, the states of the two transistors change at the moment of power-up. This change becomes increasingly intense due to positive feedback, leading to a quasi-stable state. During the quasi-stable state, the other transistor gradually charges via the capacitor and then conducts or cuts off, causing the state to flip and reach another quasi-stable state. This cycle repeats to form oscillation.

SLOUPARNAMAJDAL electrical component features

The characteristics of self-resetting fuses include high breaking current capacity, capable of interrupting AC and even higher currents. This type of fuse has a very significant current-limiting effect; when the instantaneous current reaches close to 170 kiloamperes, it can rapidly limit the current. The structure of a self-resetting fuse mainly consists of current terminals (also called electrodes), mica glass (filler), insulating tube, fusible element, piston, argon gas, and housing. The housing of the self-resetting fuse is generally made of stainless steel, with the stainless steel sleeve separated from the internal beryllium oxide ceramic insulating tube by mica glass, which serves as both filler and insulator. Self-resetting fuses operate based on the characteristic of sodium metal whose resistance increases sharply at high temperatures. Under normal operating conditions, current flows from the left current terminal, through the sodium metal fusible element within the fine holes of the beryllium oxide ceramic insulating tube, to the right current terminal, forming a current path. When a short-circuit fault occurs, the short-circuit current heats the sodium metal, vaporizing it into a high-temperature, high-pressure plasma state, causing its resistance to increase sharply, thereby achieving current limiting. At this point, the high pressure generated by the vaporized fusible element pushes the piston to the right, compressing the argon gas. After the circuit breaker interrupts the short-circuit current limited by the self-resetting fuse, the temperature of the sodium vapor drops, and the pressure decreases accordingly. The previously compressed argon gas condenses back into liquid and solid states, and its resistance value reduces to the original value, making it ready for reuse. Regarding the wiring of self-resetting fuses, they are often used in series with circuit breakers, with an additional resistor connected in parallel to suppress overvoltage during interruption. During normal operation, the self-resetting fuse is in a low-resistance state, and only a small current flows through the parallel resistor. When a line fault occurs, the self-resetting fuse enters a high-resistance state, allowing the parallel resistor to absorb the generated overvoltage and maintain the operating current required for the circuit breaker trip unit, ensuring reliable interruption by the circuit breaker. Therefore, the current interrupted by the circuit breaker is actually the current-limited value of the self-resetting fuse.

SLOUPARNAMAJDAL electrical component features

Solid-state relays are contactless electronic switches with isolation functionality. There are no mechanical contact parts during the switching process. Therefore, in addition to having the same functions as electromagnetic relays, solid-state relays offer compatibility with logic circuits, resistance to vibration and mechanical shock, unrestricted installation positions, good moisture-proof, mold-proof, and corrosion-resistant performance, excellent performance in explosion-proof and ozone pollution prevention, low input power, high sensitivity, low control power, good electromagnetic compatibility, low noise, and high operating frequency. Solid-state relays have no internal mechanical parts and adopt a potting fully sealed structure, providing advantages such as vibration resistance, corrosion resistance, long life, and high reliability. AC solid-state relays use zero-crossing triggering technology, resulting in short switching times, making them suitable for higher frequency applications. Optical isolation is used between the input and output circuits, resulting in very low input power consumption. The output end has protection circuits and strong load capacity.

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