gira electrical components Germany gira model gira price

gira electrical components consist of two conductors placed close to each other with a non-conductive insulating medium sandwiched between them, forming a capacitor. When voltage is applied across the two plates of the capacitor, it stores charge. The capacitance value is numerically equal to the ratio of the charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance is the Farad (F). In circuit diagrams, the letter C is commonly used to represent capacitive elements; capacitors are components that store electric charge and electrical energy (electric potential energy). A system of conductors where one conductor is surrounded by another, or where all electric field lines originating from one conductor terminate on another conductor, is called a capacitor.

gira electrical component classification

Oscillators are mainly divided into RC, LC oscillators, and crystal oscillators. 1, RC oscillators that use an RC network as the frequency-selective phase-shift network are collectively referred to as RC sinusoidal oscillators, which belong to audio oscillators. 2, LC oscillators that use an LC resonant circuit as the phase-shift and frequency-selective network for positive feedback are called LC oscillators. 3, crystal oscillators are oscillators whose oscillation frequency is controlled by a quartz crystal. 13. A temperature coefficient oscillator refers to an oscillator where there is a specific relationship between its oscillation frequency and temperature, meaning different temperatures correspond to different oscillation frequencies. Conversely, by measuring the output frequency of the oscillator, the temperature value can be determined.

gira electrical component principle

The absorption film irradiated by infrared rays is a thin film with low heat capacity, allowing its temperature to rise easily. A cavity structure is located at the bottom near the center of the substrate; this design ensures a temperature difference between the cold end and the temperature-measuring end. The thermocouple is composed of polysilicon and aluminum, connected in series. When the temperature at the measuring end of each thermocouple rises, a thermoelectromotive force Vn is generated between the thermocouples, so the sum of their voltages can be obtained at the output terminal.

gira electrical component principle

Optical measurement and control systems vary widely depending on the operating principle of the photoelectric element's response to luminous flux. Based on the nature of the output from the photoelectric element (optical measurement and control system), they can be divided into two categories: analog photoelectric sensors and pulse (switching) photoelectric sensors. Analog photoelectric sensors convert the measured quantity into a continuously changing photocurrent, exhibiting a single-valued relationship with the measured quantity. Analog photoelectric sensors can be further classified into three types based on the method of measuring the target object: transmission (absorption) type, diffuse reflection type, and shading (beam blocking) type. The transmission type refers to placing the measured object in the optical path, where light energy from a constant source passes through the object, is partially absorbed, and the transmitted light projects onto the photoelectric element. The diffuse reflection type refers to light from a constant source projecting onto the measured object, reflecting off its surface, and then projecting onto the photoelectric element. The shading type refers to the scenario where the measured object blocks part of the luminous flux from the light source, altering the flux reaching the photoelectric element; the degree of change depends on the object's position in the optical path. Photodiodes are the most common optical sensors. The appearance of a photodiode is similar to that of a standard diode. When there is no illumination, its reverse current is very small, known as the dark current of the photodiode. When illuminated, carriers are excited, generating electron-hole pairs, known as photo-carriers. Under the influence of an external electric field, these photo-carriers participate in conduction, forming a reverse current much larger than the dark current, known as photocurrent. The magnitude of the photocurrent is proportional to the light intensity, allowing an electrical signal that varies with light intensity to be obtained across the load resistor.

Weidou Intelligent Technology specializes in selling German gira connectors, gira switches, gira relays, gira controllers, gira plugs, gira sensors, gira resistors, gira capacitors, gira buses, gira modules, gira cables, gira power supplies, gira interfaces, gira gateways, gira circuit breakers, gira original imports from Germany. We welcome inquiries and orders from users.