10174002 in stock. German 10174002 electrical components. 10174002 inventory.

10174002 electrical components are constituent parts of electronic components and small electrical machines and instruments. They often consist of several parts and are interchangeable within similar products. The term commonly refers to certain parts used in the electrical, radio, and instrumentation industries. In practice, electronic components is the collective term for both components and devices.

10174002 electrical component characteristics

Sensitivity refers to the ratio of the change in output to the change in input when the sensor is operating under steady-state conditions. It is the slope of the output-input characteristic curve. If a linear relationship exists between the sensor's output and input, then the sensitivity S is a constant. Otherwise, it varies with changes in the input. The dimension of sensitivity is the ratio of the dimensions of the output and input quantities. When the dimensions of the sensor's output and input are the same, sensitivity can be understood as the amplification factor. Increasing sensitivity yields higher measurement accuracy. However, the higher the sensitivity, the narrower the measurement range, and stability often deteriorates.

10174002 electrical component principles

In addition to converting optical signals into electrical signals like a photodiode, a phototransistor also provides electrical signal amplification. The appearance of a phototransistor is similar to that of a standard transistor. Typically, a phototransistor has only two leads: the emitter and the collector; the base is not connected. The casing features a window to allow light entry. To increase light exposure, the base region area is made large, while the emitter region is small; incident light is primarily absorbed by the base region. During operation, the collector junction is reverse-biased, and the emitter junction is forward-biased. In the absence of light, the current flowing through the transistor is the dark current Iceo = (1 + β) Icbo (very small), which is even smaller than the penetration current of a standard transistor. When illuminated, a large number of electron-hole pairs are generated, causing the base current Ib to increase. The current flowing through the transistor at this time is called the photocurrent. The emitter current Ie = (10 + β) Ib. Thus, the phototransistor exhibits higher sensitivity than the photodiode.

10174002 electrical component applications

Photoelectric sensors using photoelectric elements as sensitive components are diverse and widely used. Based on the nature of the output, photoelectric sensors can be classified into two categories: (1) Photoelectric measuring instruments that convert the measured quantity into a continuously varying photocurrent. These are used to measure physical quantities such as light intensity, object temperature, light transmittance, displacement, and surface condition. Examples include illuminance meters for measuring light intensity, photoelectric pyrometers, photoelectric colorimeters, turbidimeters, photoelectric fire alarms, and automatic inspection devices and instruments for checking the diameter, length, ovality, and surface roughness of machined parts. All these use photoelectric elements as their sensitive components. Semiconductor photoelectric elements are widely used not only in civil industrial fields but also hold significant importance in military applications. For example, lead sulfide photoresistors can be used to make infrared night vision devices, infrared cameras, and infrared navigation systems. (7) Devices that convert the measured quantity into a continuously varying photocurrent. Various photoelectric automatic devices are manufactured utilizing the characteristic of photoelectric elements to output an electrical signal ("on") or no signal ("off") when exposed to light or kept in darkness. Photoelectric elements serve as switching photoelectric conversion components. Examples include photoelectric input devices for computers, switching temperature control devices, and digital photoelectric tachometers for speed measurement.

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