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3SU1401-1BB40-3AA0 electrical component is an energy conversion device that converts DC electrical energy into AC electrical energy with a specific frequency; the circuit it forms is called an oscillating circuit. An oscillator is simply a frequency source, generally used in phase-locked loops. In detail, it is a device that can convert DC electrical energy into AC electrical energy on its own without external signal excitation. It is generally divided into two types: positive feedback and negative resistance. The term "oscillation" implies alternating current; an oscillator includes the process and function of transitioning from non-oscillating to oscillating. Such a device capable of converting DC electrical energy into AC electrical energy can be called an "oscillator." Oscillators are mainly divided into two types: harmonic oscillators and relaxation oscillators. They are electronic components used to generate repetitive electronic signals (usually sine waves or square waves). The circuit they form is called an oscillating circuit. It is an electronic circuit or device that can convert DC electricity into AC electrical signal output with a specific frequency. There are many types; classified by oscillation excitation method, they include self-excited oscillators and externally excited oscillators; classified by circuit structure, they include RC oscillators, LC oscillators, crystal oscillators, tuning fork oscillators, etc.; classified by output waveform, they include sine wave, square wave, and sawtooth wave oscillators. They are widely used in the electronics industry, medical care, scientific research, and other fields.

3SU1401-1BB40-3AA0 Electrical Component Characteristics

Resolution refers to the ability of a sensor to detect the smallest change in the measured quantity. That is, if the input changes slowly from a certain non-zero value, when the input change does not exceed a certain value, the sensor output will not change, meaning the sensor cannot resolve this change in the input. Only when the change in the input exceeds the resolution will the output change. Typically, the resolution at various points within the full-scale range of a sensor is not the same; therefore, the maximum change in the input that causes a step change in the output within the full scale is commonly used as the indicator for measuring resolution. If the above indicator is expressed as a percentage of the full scale, it is called resolution. Resolution has a negative correlation with sensor stability.

3SU1401-1BB40-3AA0 Electrical Component Principle

Microphones have evolved from initial resistive electro-acoustic conversion to inductive and capacitive conversion. Many new microphone technologies have gradually developed, including aluminum ribbon moving-coil microphones, as well as the currently widely used condenser microphones and electret microphones. The working principle of a moving-coil microphone is that human voice vibrates the diaphragm through air, and then the electromagnetic coil winding on the diaphragm cuts the magnetic field formed by the magnet surrounding the moving-coil head, generating a weak fluctuating current. The current is transmitted to the amplifier, which then converts the fluctuating current back into sound through the reverse process. For ribbon microphones, the aluminum ribbon serves as both the microphone diaphragm and the conductor moving in the magnetic field. The ribbon is usually made of aluminum foil. To achieve an ideal resonant frequency, the ribbon is corrugated to maintain a precise tension value. As a conductor and microphone diaphragm, the ribbon is suspended in the magnetic field between two magnetic poles, vibrating with the frequency of the incident sound wave, while generating a certain voltage output at both ends of the ribbon. A condenser microphone has two metal plates, one of which is coated with an electret film and grounded, while the other plate is connected to the gate of a field-effect transistor (FET), with a diode connected between the gate and the source. The diaphragm of a condenser microphone often uses fluorinated ethylene propylene (FEP), which has good humidity performance, generates more surface charge, and is less affected by humidity. Since this transducer also has a capacitive structure with high internal signal impedance, a field-effect transistor must be used at its output terminal to extract and amplify the voltage signal generated by sound.

3SU1401-1BB40-3AA0 Electrical Component Classification

Microphones can be classified into dynamic microphones and condenser microphones based on their transduction principle. Dynamic types can be further subdivided into moving-coil microphones and ribbon microphones. Common commercial microphone types include condenser microphones, crystal microphones, carbon microphones, and dynamic microphones. Commonly used condenser microphones use two types of energy sources: DC bias power supply and electret film. Both these condenser microphones and crystal microphones convert acoustic energy into electrical energy, producing a changing electric field. Carbon microphones use a DC voltage source; sound vibrations change their resistance, thereby converting acoustic signals into electrical signals. Condenser, crystal, and carbon microphones all produce a voltage signal proportional to the displacement of the sensitive membrane, while dynamic microphones produce a voltage signal proportional to the vibration velocity of the sensitive membrane. Dynamic microphones use a permanent magnet as the energy source, converting acoustic energy into electrical energy based on inductive effect.

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