schmalz electrical components Germany schmalz model schmalz price

schmalz electrical components are current fuses that provide overload protection. When a circuit fault or abnormality occurs, the current continues to rise. This rising current may damage certain important components in the circuit, burn out the circuit, or even cause a fire. If a fuse is correctly installed in the circuit, it will melt and cut off the current when the current abnormally rises to a certain level and temperature, thereby protecting the safe operation of the circuit. With the fuse correctly installed in the circuit, the fuse will melt and cut off the current when the current abnormally rises to a certain level and temperature, protecting the safe operation of the circuit. The fuse invented by Edison was used to protect the then-expensive incandescent lamps. With the development of the times, fuses protect power equipment from damage caused by overcurrent and overheating, avoiding serious damage to electronic equipment caused by internal faults.

schmalz electrical component composition

A multimeter consists of three main parts: the meter head, the measuring circuit, and the selector switch. The multimeter is the most basic tool in the field of electronic testing and is also a widely used test instrument. Multimeters are also called multi-meters, triple-purpose meters (A, V, Ω, i.e., for current, voltage, and resistance), multiplexers, or universal meters. Multimeters are divided into analog multimeters and digital multimeters. There is also an oscilloscope multimeter with oscilloscope functionality, which is a multifunctional, multi-range measuring instrument. General multimeters can measure DC current, DC voltage, AC voltage, resistance, and audio levels. Some can also measure AC current, capacitance, inductance, temperature, and certain parameters of semiconductors (diodes, transistors). Digital multimeters have become mainstream and have replaced analog instruments. Compared with analog instruments, digital instruments offer high sensitivity, high accuracy, clear display, strong overload capacity, portability, and easier, simpler use.

schmalz electrical component classification

Classification by operating principle or structural characteristics of relays: (1) Electromagnetic relay: An electrical relay that operates using the attractive force generated between the electromagnet core and the armature by the current in the input circuit. (2) Solid-state relay: A relay with no mechanical moving parts, where electronic components perform its functions, providing isolation between input and output. (3) Temperature relay: A relay that operates when the ambient temperature reaches a specified value. (4) Reed relay: A relay that opens, closes, or switches circuits using the action of reed contacts sealed in a tube, which serve both as contact springs and part of the armature magnetic circuit. (5) Time delay relay: A relay whose output section delays or limits the time to a specified duration before closing or opening the controlled circuit when an input signal is applied or removed. (6) High-frequency relay: A relay used for switching high-frequency and RF lines with minimal loss. (7) Polarized relay: A relay that operates through the combined effect of a polarizing magnetic field and the magnetic field generated by the control current passing through the control coil. The operating direction of the relay depends on the direction of the current flowing through the control coil. (8) Other types of relays: Such as optical relays, acoustic relays, thermal relays, instrument relays, Hall effect relays, differential relays, etc.

schmalz electrical component classification

For different application scenarios, the purpose of using varistors, and the voltage/current stress applied to them, vary; therefore, the requirements for varistors also differ. It is very important to distinguish these differences for correct usage. Based on the purpose of use, 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 Depending 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 stresses differ. 5 Depending 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. The protective function of varistors can be repeated many times in most application scenarios, 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.

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