BRENNENSTUHL electrical components Germany BRENNENSTUHL model BRENNENSTUHL price

BRENNENSTUHL electrical components are parts of electronic components and small electrical machines and instruments. They often consist of several parts and can be used interchangeably within similar products; they often refer to certain parts in the electrical, radio, and instrumentation industries. In practice, electronic components is the general term for both components and devices.

BRENNENSTUHL electrical component structure

A solid-state relay consists of three parts: the input circuit, isolation, and output circuit. According to different categories of input voltage, the input circuit can be divided into DC input circuit, AC input circuit, and AC/DC input circuit. Some input control circuits also feature compatibility with TTL/CMOS, positive/negative logic control, and inversion, allowing convenient connection to TTL and MOS logic circuits. For control signals with fixed control voltage, a resistive input circuit is used. The isolation and coupling methods between the input and output circuits of a solid-state relay include optocoupling and transformer coupling. Optocoupling typically uses photodiode-phototransistor, photodiode-triac optocoupler, or photovoltaic cells to achieve isolated control between the control side and the load side. High-frequency transformer coupling utilizes the self-excited high-frequency signal generated by the input control signal, which is coupled to the secondary side, then demodulated, rectified, and processed by logic circuits to form a drive signal. The power switch of the solid-state relay is directly connected to the power supply and load terminals to realize switching of the load power. Mainly used components include high-power bipolar transistors, SCRs, triacs, power MOSFETs, and IGBTs. The output circuit of a solid-state relay can also be divided into DC output, AC output, and AC/DC output forms. According to load type, it can be divided into DC solid-state relays and AC solid-state relays. For DC output, bipolar devices or power MOSFETs can be used; for AC output, two SCRs or one triac are typically used. AC solid-state relays can be further divided into single-phase AC solid-state relays and three-phase AC solid-state relays. AC solid-state relays can be classified into random-turn-on AC solid-state relays and zero-crossing AC solid-state relays based on the timing of turn-on and turn-off.

BRENNENSTUHL electrical component classification

1. Classification by relay physical dimensions: (1) Micro relay, (2) Sub-miniature relay, (3) Miniature relay. 2. Classification by relay load: (1) Micropower relay, (2) Low-power relay, (3) Medium-power relay, (4) High-power relay. 11. Classification by relay protection characteristics: (1) Sealed relay: Relays where contacts and coils are sealed inside a cover by welding or other methods, isolated from the surrounding medium, resulting in a low leakage rate. (2) Enclosed relay: Relays where contacts and coils are protected by a housing (non-sealed). (3) Open relay: Relays that do not use a protective cover for contacts and coils. Among the above relays, electromagnetic relays and reed relays are the most commonly used in electronic fabrication.

BRENNENSTUHL electrical component classification

a. By material: Silicon transistor, Germanium transistor. b. By structure: NPN, PNP. c. By function: Switching transistor, power transistor, Darlington transistor, photosensitive transistor, etc. d. By power: Low-power transistor, medium-power transistor, high-power transistor. e. By operating frequency: Low-frequency transistor, high-frequency transistor, ultra-high-frequency transistor. f. By structural process: Alloy transistor, planar transistor. g. By mounting method: Through-hole transistor, SMD transistor.

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