STROJSMALTPLUS electrical components Germany STROJSMALTPLUS model STROJSMALTPLUS price

STROJSMALTPLUS electrical components refer to integrated circuits in which analog circuits composed of capacitors, resistors, transistors, etc., are integrated to process analog signals. There are many analog integrated circuits, such as operational amplifiers, analog multipliers, phase-locked loops, and power management chips. The main constituent circuits of analog integrated circuits include: amplifiers, filters, feedback circuits, reference source circuits, switched-capacitor circuits, etc. Analog integrated circuit design is mainly obtained through manual circuit debugging and simulation by experienced designers. Corresponding to this, most digital integrated circuit designs are automatically synthesized under the control of EDA software using hardware description languages. Integrated circuits can be divided into two major categories based on their function and structure: digital IC and analog IC. Digital IC are used to generate, amplify, and process various digital signals (signals that vary discretely in time and amplitude). Analog IC are circuits used to generate, amplify, and process various analog signals (signals whose amplitude varies continuously with time). They are one of the core technologies of microelectronics, capable of acquiring, amplifying, comparing, converting, and modulating analog quantities such as voltage or current.

STROJSMALTPLUS electrical component characteristics

(1) Volt-ampere characteristics: When a forward voltage is applied to a diode, the current is extremely small when the voltage value is low; when the voltage exceeds a certain value, the current begins to increase exponentially. This is usually called the turn-on voltage of the diode. When the diode is in a fully conductive state, this voltage is usually called the conduction voltage of the diode. For germanium diodes, when a reverse voltage is applied to the diode, the current is extremely small when the voltage value is low, and its current value is the reverse saturation current. When the reverse voltage exceeds a certain value, the current increases sharply, which is called reverse breakdown, and this voltage is called the reverse breakdown voltage of the diode. The breakdown voltage values of different diode models vary greatly, from tens of volts to thousands of volts. (2) Forward characteristics: When an external forward voltage is applied, in the initial part of the forward characteristics, the forward voltage is very small and insufficient to overcome the blocking effect of the electric field within the PN junction, so the forward current is almost zero. This section is called the dead zone. The forward voltage that cannot make the diode conduct is called the dead zone voltage. When the forward voltage is greater than the dead zone voltage, the electric field within the PN junction is overcome, the diode conducts in the forward direction, and the current rises rapidly as the voltage increases. Within the normal operating current range, the terminal voltage of the diode during conduction remains almost constant; this voltage is called the forward voltage of the diode. When the forward voltage across the diode exceeds a certain value, the internal electric field is quickly weakened, the characteristic current grows rapidly, and the diode conducts in the forward direction. This is called the threshold voltage or cut-in voltage. (3) Reverse characteristics: When the applied reverse voltage does not exceed a certain range, the current flowing through the diode is a reverse current formed by the drift motion of minority carriers. Since the reverse current is very small, the diode is in the cutoff state. This reverse current is also called reverse saturation current or leakage current. The reverse saturation current of a diode is greatly affected by temperature. Generally, the reverse current of silicon tubes is much smaller than that of germanium tubes. The reverse saturation current of low-power silicon tubes is in the order of nA, and that of low-power germanium tubes is in the order of μA. When the temperature rises, the semiconductor is thermally excited, the number of minority carriers increases, and the reverse saturation current also increases. (4) Breakdown characteristics: When the applied reverse voltage exceeds a certain value, the reverse current will suddenly increase. This phenomenon is called electrical breakdown. The critical voltage causing electrical breakdown is called the diode reverse breakdown voltage. During electrical breakdown, the diode loses its unidirectional conductivity. If the diode does not overheat due to electrical breakdown, the unidirectional conductivity will not necessarily be permanently destroyed. After removing the applied voltage, its performance can still be recovered; otherwise, the diode will be damaged. Therefore, excessive reverse voltage applied to the diode should be avoided during use. Reverse breakdown is divided into two types based on mechanism: Zener breakdown and avalanche breakdown. In the case of high doping concentration, because the width of the barrier region is very small, a large reverse voltage destroys the covalent bond structure within the barrier region, causing valence electrons to break free from covalent bonds and generate electron-hole pairs, resulting in a sharp increase in current. This type of breakdown is called Zener breakdown. If the doping concentration is lower and the barrier region is wider, Zener breakdown is less likely to occur. Another type of breakdown is avalanche breakdown. When the reverse voltage increases to a large value, the external electric field accelerates the electron drift speed, causing collisions with valence electrons in covalent bonds. This knocks valence electrons out of covalent bonds, generating new electron-hole pairs. The newly generated electron-hole pairs are accelerated by the electric field and knock out other valence electrons, causing an avalanche-like increase in carriers and a sharp increase in current. This type of breakdown is called avalanche breakdown. Regardless of the type of breakdown, if the current is not limited, it may cause permanent damage to the PN junction. (5) Reverse current: Reverse current refers to the current flowing through the diode when it is at room temperature and under the maximum reverse voltage. The smaller the reverse current, the better the unidirectional conductivity of the tube. It is worth noting that reverse current is closely related to temperature; the reverse current doubles. Therefore, silicon diodes have better stability at high temperatures than germanium diodes. (6) Dynamic resistance: The ratio of the change in voltage to the corresponding change in current near the static operating point of the diode characteristic curve. (7) Voltage temperature coefficient: The voltage temperature coefficient refers to the relative change in stable voltage for every one degree Celsius increase in temperature. (8) Maximum operating frequency: The maximum operating frequency is the upper limit frequency for diode operation. Since the diode, like the PN junction, has a junction capacitance composed of barrier capacitance, the value of the maximum operating frequency mainly depends on the size of the PN junction capacitance. If this value is exceeded, the unidirectional conductivity will be affected. (9) Maximum rectified current: Maximum rectified current refers to the maximum allowable forward average current value when the diode operates continuously for a long period. Its value is related to the PN junction area and external heat dissipation conditions. Because current passing through the tube causes the core to heat up and the temperature to rise, exceeding the permissible limit will cause the core to overheat and become damaged. Therefore, under specified heat dissipation conditions, the diode should not exceed its maximum rectified current value during use.(10) Maximum reverse working voltage: When the reverse voltage applied across the diode reaches a certain high value, the tube will break down and lose its unidirectional conductivity. To ensure safe use, the maximum reverse working voltage value is specified.

STROJSMALTPLUS Electrical component functions

Photoelectric switches can be used in various application scenarios. Avoid strong light sources. Photoelectric switches can generally work stably when the ambient illuminance is high. However, avoid aligning the sensor's optical axis directly with strong light sources such as sunlight or incandescent lamps. When the angle between the sensor's (receiver's) optical axis and the strong light source cannot be changed, install shading plates around the top of the sensor or cover it with a long shading tube. Prevent mutual interference. New photoelectric switches usually have automatic mutual interference prevention functions, so there is no need to worry about mutual interference. However, when several groups of HGK series through-beam infrared photoelectric switches are installed close together in parallel, mutual interference between adjacent groups should be prevented. The most effective way to prevent this interference is to cross-set the transmitter and receiver. When there are more than 7 groups, increase the distance between groups. Of course, using models with different frequencies is also a good method. An effective way to prevent mutual interference for reflective photoelectric switches is to increase the spacing. Moreover, the farther the detection distance, the larger the spacing should be. The specific spacing should be determined based on debugging conditions. Of course, models with different operating frequencies can also be used. Influence of mirror angle: When the detected object is glossy or encounters a smooth metal surface, the reflectivity is generally very high, acting like a mirror. Adjust the installation so that its optical axis is not perpendicular to the detected object, thereby preventing malfunction. Eliminating background influence: When using reflective diffuse transmitters and receivers, sometimes the photoelectric switch may fail to detect stably because the detected object is close to the background, or the photoelectric switch or background is a smooth object with high reflectivity. Therefore, you can switch to distance-limited transmitters and receivers, or adopt methods such as moving away from the background, removing the background, painting the background matte black, or making the background rough and dark to eliminate the influence. Use of self-diagnosis function: During installation or use, problems such as slight deviation of the optical axis, lens contamination, dust accumulation, external noise, or ambient temperature exceeding the range may occur due to the influence of the table surface or background, or vibration. These problems may cause the photoelectric switch to deviate from the stable operating zone. In this case, the self-diagnosis function of the photoelectric switch can be used to make the green stable indicator light notify the user, reminding them to adjust it in time.

STROJSMALTPLUS Electrical component applications

The structure and characteristics of Schottky diodes make them suitable for high-frequency rectification in low-voltage, high-current output applications. They are used for detection and mixing at very high frequencies (such as X band, C band, S band, and Ku band), and as clamps in high-speed logic circuits. In addition to the characteristic parameters of ordinary PN junction diodes, the electrical parameters of Schottky diodes used for detection and mixing also include intermediate frequency impedance, voltage standing wave ratio, and noise figure. The Schottky barrier diode is a low-power, ultra-high-speed semiconductor device. Its most significant feature is an extremely short reverse recovery time (which can be as small as a few nanoseconds). It is mostly used as a high-frequency, low-voltage, high-current rectifier diode, freewheeling diode, and protection diode. It is also used as a rectifier diode and small-signal detection diode in circuits such as microwave communications. It is relatively common in communication power supplies, inverters, etc. A typical application is in the switching circuit of a bipolar junction transistor BJT. By connecting a Shockley diode to the BJT for clamping, the transistor is kept very close to the cutoff state even when it is in the conducting state, thereby improving the switching speed of the transistor. The biggest feature of Schottky diodes is a relatively small forward voltage drop. Under the same current conditions, its forward voltage drop is much smaller. In addition, its recovery time is short. It also has some disadvantages: relatively low voltage resistance and slightly larger leakage current. Comprehensive consideration is required when selecting.

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