lindy electrical components Germany lindy model lindy price

lindy electrical components are electrical control devices. When the change in the input quantity (excitation) meets specified requirements, they cause a predetermined step change in the controlled quantity within the electrical output circuit. They facilitate interaction between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). Typically applied in automated control circuits, they function as "automatic switches" that use small currents to control large currents. Therefore, they serve functions such as automatic regulation, safety protection, and circuit switching in electrical circuits. A relay is an electrical control device that, when provided with a specified input quantity for a sufficient duration, causes a predetermined step change in the controlled quantity in the electrical output circuit. When the input quantity drops to a certain level and remains there for a sufficient duration, the device returns to its initial state.

lindy electrical component classification

In different application scenarios, the purpose of using varistors and the voltage/current stresses applied to them vary, leading to different requirements for varistors. It is crucial to distinguish these differences for correct usage. Based on the application purpose, varistors can be classified into two main categories: protection varistors and circuit-function varistors. ① Protection varistors: 1, distinguish between power supply protection and signal line or data line protection varistors, as they must meet different technical standard requirements. 2, based on the continuous operating voltage applied to the varistor, varistors used across power lines can be classified into AC types or DC types; the aging characteristics of varistors under these two voltage stress conditions differ. 8, based on the abnormal overvoltage characteristics withstandable by the varistor, varistors can be classified into three types: surge suppression type, high-power type, and high-energy type. ② Surge suppression type: refers to varistors used to suppress transient overvoltages such as lightning overvoltage and switching overvoltage. The occurrence of such transient overvoltages is random and non-periodic, and the peak current and voltage may be very high. The vast majority of varistors belong to this category. ③ High-power type: refers to varistors used to absorb continuous pulse trains that occur periodically, such as varistors connected in parallel to switching power supply converters. Here, the impulse voltage occurs periodically with a known period, and the energy value can generally be calculated. Although the voltage peak is not very high, the average power is considerable due to the high frequency of occurrence. ④ High-energy type: refers to varistors used to absorb magnetic energy from large inductive coils such as generator excitation coils and lifting electromagnet coils. For such applications, the main technical indicator is energy absorption capability. In most application scenarios, the protective function of varistors can act repeatedly multiple times, but sometimes they are designed as one-time protective devices similar to current fuses. For example, varistors with short-circuit contacts connected in parallel to the loads of certain current transformers.

lindy electrical component classification

Self-inductance occurs when current flowing through a coil generates a magnetic field around it. When the current in the coil changes, the surrounding magnetic field changes correspondingly. This changing magnetic field induces an electromotive force (induced EMF) in the coil itself (EMF represents the terminal voltage of an ideal power source of an active component), which is known as self-inductance. Electronic components made by winding conductive wire with a specific number of turns, capable of producing a certain amount of self-inductance or mutual inductance, are commonly referred to as inductor coils. To increase inductance, improve the quality factor, and reduce volume, iron cores or magnetic cores made of ferromagnetic materials are often added. Basic parameters of inductors include inductance, quality factor, inherent capacitance, stability, rated current, and operating frequency. An inductor composed of a single coil is called a self-inductor, and its self-inductance is also referred to as the self-inductance coefficient. Mutual inductance occurs when two inductor coils are placed close to each other; a change in the magnetic field of one coil affects the other. This effect is called mutual inductance. The magnitude of mutual inductance depends on the self-inductance of the coils and the degree of coupling between them. Components manufactured based on this principle are called mutual inductors.

lindy electrical component functions

Controlling high power, capable of controlling hundreds of kilowatts. Using power transistors as switches offers many advantages, primarily ease of turn-off and fewer required auxiliary components. Fast switching allows operation at high frequencies. Transistor compounding (Darlington) and parallel connection are effective methods to increase transistor switching capability. In such high-power circuits, the main issue is wiring. High switching speeds can generate significant interference voltage even on short connection lines. Simple and optimized base drive achieves high performance. The base drive circuit not only drives the power transistor but also protects it, referred to as "decentralized protection" (in contrast to centralized protection). Functions of integrated drive circuits include: turning the power switch on and off, monitoring auxiliary power supply voltage, limiting maximum and minimum pulse widths, thermal protection, and monitoring the switch's saturation voltage drop.

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