Funke electrical components Germany Funke model Funke price

Funke electrical component is a photodetector that converts light into current or voltage signals depending on the mode of use. The die typically uses a PN junction with photosensitive characteristics, which is highly sensitive to changes in light, exhibits unidirectional conductivity, and changes its electrical properties with varying light intensity, allowing the current in the circuit to be altered by the intensity of illumination. Photodiodes are also called photoelectric diodes. Photodiodes are similar in structure to semiconductor diodes; their die is a PN junction with photosensitive characteristics and unidirectional conductivity, so they require a reverse voltage during operation. In the absence of light, there is a very small saturated reverse leakage current, known as dark current, at which point the photodiode is cut off. When exposed to light, the saturated reverse leakage current increases significantly, forming a photocurrent that varies with the intensity of the incident light. When light irradiates the PN junction, it generates electron-hole pairs within the PN junction, increasing the density of minority carriers. These carriers drift under reverse voltage, causing the reverse current to increase. Therefore, the current in the circuit can be changed by varying the light intensity.

Funke electrical component features

Among various types of switches, there is a component with the ability to "sense" objects approaching it—the displacement sensor. Utilizing the sensitivity of the displacement sensor to approaching objects achieves the purpose of controlling the switch on or off; this is a proximity switch. Only when an object moves toward the proximity switch and approaches within a certain distance does the displacement sensor "sense" it, causing the switch to actuate. This distance is usually called the "detection distance." Different proximity switches have different detection distances. Sometimes the detected object moves toward the proximity switch one by one at certain time intervals and leaves one by one, repeating continuously. Different proximity switches have different response capabilities to the detection object. This response characteristic is called the "response frequency."

Funke electrical component function

Antennas radiate radio waves and also receive radio waves. However, what the transmitter feeds into the antenna through the feeder is not radio waves, nor can the receiving antenna directly feed radio waves into the receiver through the feeder; an energy conversion process must occur in between. Below, we analyze the signal transmission process using radio communication equipment as an example to illustrate the energy conversion role of the antenna. At the transmitting end, the modulated high-frequency oscillating current (energy) generated by the transmitter is input to the transmitting antenna via feeding equipment (the feeding equipment can directly transmit current waves or electromagnetic waves depending on frequency and form). The transmitting antenna converts the high-frequency current or guided wave (energy) into radio waves—free electromagnetic waves (energy)—radiating them into the surrounding space. At the receiving end, radio waves (energy) are converted by the receiving antenna into high-frequency current or guided wave (energy) and transmitted to the receiver via the feeding equipment. From the above process, it can be seen that the antenna is not only a device for radiating and receiving radio waves but also an energy converter, serving as the interface device between the circuit and space.

Funke electrical component classification

Based on the working power supply of the motor, motors can be divided into DC motors and AC motors. Among them, AC motors are further divided into single-phase motors and three-phase motors. Motors can be classified into DC motors, asynchronous motors, and synchronous motors based on structure and operating principle. Synchronous motors can be further divided into permanent magnet synchronous motors, reluctance synchronous motors, and hysteresis synchronous motors. Asynchronous motors can be divided into induction motors and AC commutator motors. Induction motors are further divided into three-phase asynchronous motors, etc. Phase asynchronous motors and shaded-pole asynchronous motors, etc. AC commutator motors are further divided into single-phase series-wound motors, AC/DC universal motors, and repulsion motors. Motors can be classified into capacitor-start single-phase asynchronous motors, capacitor-run single-phase asynchronous motors, capacitor-start-and-run single-phase asynchronous motors, and split-phase single-phase asynchronous motors based on starting and running methods. Motors can be classified into drive motors and control motors based on application. Drive motors are further divided into motors for power tools, motors for home appliances, and motors for other general small mechanical equipment. Control motors are further divided into stepper motors and servo motors, etc. Motors can be classified into squirrel-cage induction motors and wound-rotor induction motors based on rotor structure. Motors can be classified into high-speed motors, low-speed motors, constant-speed motors, and variable-speed motors based on operating speed.

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