IKURA electrical components German IKURA models IKURA prices

IKURA electrical components are wires that transmit current. Current transmission is typically point-to-point. Power cords can be classified by use into AC AC power cords and DC DC power cords. Typically, AC power cords carry higher-voltage alternating current; due to the high voltage, these cables must meet unified standards and obtain safety certification before formal production. In contrast, DC cords basically carry lower-voltage direct current, so safety requirements are not as strict as for AC cords. However, for safety reasons, countries still require unified safety certification.

IKURA electrical component classification

1. By application: pressure-sensitive and force-sensitive sensors, position sensors, level sensors, energy consumption sensors, speed sensors, acceleration sensors, radiation sensors, thermal sensors. 2. By principle: vibration sensors, humidity-sensitive sensors, magnetic-sensitive sensors, gas-sensitive sensors, vacuum degree sensors, biological sensors, etc. 3. By output signal: (1) Analog sensors convert the measured non-electrical quantity into an analog electrical signal. (2) Digital sensors: convert the measured non-electrical quantity into a digital output signal (including direct and indirect conversion). (3) Quasi-digital sensors: convert the measured signal quantity into a frequency signal or short-period signal output (including direct or indirect conversion). (4) Switch sensors: when a measured signal reaches a specific threshold, the sensor correspondingly outputs a set low-level or high-level signal. 4. By manufacturing process: Integrated sensors are manufactured using standard production processes for silicon-based semiconductor integrated circuits. Usually, part of the circuitry for preliminary processing of the measured signal is also integrated on the same chip. Thin-film sensors are formed by depositing thin films of corresponding sensitive materials on a dielectric substrate (base plate). When using hybrid processes, part of the circuitry can also be fabricated on this substrate. Thick-film sensors are made by coating ceramic substrates, usually made of alumina, with slurries of corresponding materials, followed by heat treatment to form the thick film. Ceramic sensors are produced using standard ceramic processes or certain variants (sol-gel, etc.). After appropriate preparatory operations, the formed elements are sintered at high temperature. There are many common characteristics between thick-film and ceramic sensor processes; in some respects, the thick-film process can be considered a variant of the ceramic process. Each process technology has its own advantages and disadvantages. Due to the lower capital investment required for research, development, and production, as well as the high stability of sensor parameters, it is more reasonable to adopt ceramic and thick-film sensors. 5. By measurement purpose: Physical sensors are made using characteristics where certain physical properties of the measured substance undergo significant changes. Chemical sensors are made using sensitive elements that can convert chemical quantities such as the composition and concentration of chemical substances into electrical quantities. Biological sensors are made using various biological or biomaterial characteristics to detect and identify chemical components in living organisms. 6. By structure: (1) Basic sensors are the most fundamental single transduction devices. (2) Combined sensors are sensors composed of different single transduction devices. (3) Application-specific sensors are sensors composed of basic or combined sensors combined with other mechanisms. 9. By mode of action: Sensors can be divided into active and passive types based on their mode of action. Active sensors include acting-type and reaction-type. Such sensors can emit a certain detection signal toward the measured object, detect changes produced in the measured object by the detection signal, or form a signal by an effect produced in the measured object by the detection signal. Those that detect changes in the detection signal are called acting-type; those that detect responses to form signals are called reaction-type. Radar and radio frequency range detectors are examples of acting-type, while photoacoustic effect analysis devices and laser analyzers are examples of reaction-type. Passive sensors only receive signals generated by the measured object itself, such as infrared radiation thermometers and infrared imaging devices.

IKURA electrical component functions

The starter solenoid switch is a key component of the starter motor, and the design quality of the solenoid switch directly affects the reliability of the starter. The starter solenoid switch has two functions: one is to connect the main circuit to rotate the starter, and the other is to push out the drive gear via the shift fork to engage with the engine flywheel ring gear. Therefore, the solenoid switch is required to have corresponding suction force, corresponding stroke, and contacts capable of reliably switching high currents. Additionally, it is required to minimize volume and weight as much as possible. Based on these characteristics, the contact structure of solenoid switches generally adopts a contact form, i.e., the moving contact is made into a bridge piece or disk shape to provide a larger heat dissipation surface and thermal capacity. The magnetic system mostly adopts a solenoid electromagnet structure to meet the requirements of corresponding stroke, corresponding suction force, small volume, and light weight. The moving iron core of the solenoid switch can move smoothly in a brass bushing equipped with a solenoid coil. The moving iron core pull rod is connected to the shift fork unidirectional clutch. Under the action of the return spring, the moving iron core normally remains in the non-operating initial position. During starting, the starter drive gear needs to move forward approximately 12-21mm. Therefore, when the solenoid switch begins to close, a large magnetomotive force is needed to generate the necessary initial suction force. After actuation, the air gap decreases, and the electromagnetic suction force increases sharply, greatly exceeding the force required to maintain the closed state. For this reason, the solenoid switch uses two coils (pull-in coil and holding coil). Initially, both the pull-in coil and the holding coil jointly generate electromagnetic suction force. After the switch contacts close, the pull-in coil automatically disengages from the operating state, and only the holding coil maintains the switch in the closed state. The holding coil current is relatively small and can be wound with thinner wire, which not only reduces the volume of the solenoid switch but also achieves reasonable suction force matching. To ensure the reliability of the starter, emphasis must be placed on controlling the design quality of the solenoid switch.

IKURA electrical component principles

In power generation, transformation, transmission, distribution, and consumption lines, current magnitudes vary widely, ranging from a few amperes to tens of thousands of amperes. For ease of measurement, protection, and control, it is necessary to convert these to a more uniform current. Additionally, voltages on lines are generally high, making direct measurement very dangerous. Current transformers serve the functions of current transformation and electrical isolation. For pointer-type ammeters, the secondary current of current transformers is mostly at the ampere level. For digital instruments, the sampled signal is generally at the milliampere level. The secondary current of miniature current transformers is at the milliampere level, mainly serving as a bridge between large transformers and sampling. Miniature current transformers are also referred to as 'instrument current transformers.' ('Instrument current transformer' implies precision current transformers with multiple current ratios used in laboratories, generally for expanding instrument ranges.) Current transformers operate on the principle of electromagnetic induction, similar to transformers; transformers transform voltage, whereas current transformers transform current. The winding of the current transformer connected to the measured current is called the primary winding; the winding connected to the measuring instrument is called the secondary winding. The ratio of the primary winding current I1 to the secondary winding I6 current is called the actual current ratio K. The current ratio when the current transformer operates at rated current is called the rated current ratio of the current transformer, denoted by Kn.

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