PRO MAX 480W 24V 20A electrical components Germany PRO MAX 480W 24V 20A model PRO MAX 480W 24V 20A price

PRO MAX 480W 24V 20A electrical component is one of the earliest electronic signal amplification devices. The cathode electron emission part, control grid, accelerating grid, and anode (plate) leads, enclosed in a glass container (usually a glass tube), are welded to the tube base. It uses an electric field to inject electrons into the control grid in a vacuum to modulate the signal, and obtains different parameter signal data after signal amplification or feedback oscillation at the anode. Early applications included electronic products such as televisions, radios, and loudspeakers; later, it was gradually replaced by amplifiers and integrated circuits made of semiconductor materials, but in some high-fidelity audio equipment, vacuum tubes with low noise and high stability coefficients are still used as audio power amplification devices (in Hong Kong, vacuum tube power amplifiers are called "tube amps").

PRO MAX 480W 24V 20A electrical component characteristics

The characteristics of an inductor are exactly opposite to those of a capacitor; it has the property of blocking alternating current while allowing direct current to pass smoothly. The resistance when a DC signal passes through the coil is just the resistance of the wire itself, resulting in a very small voltage drop; when an AC signal passes through the coil, a self-induced electromotive force is generated across the two ends of the coil. The direction of this self-induced electromotive force is opposite to that of the applied voltage, hindering the passage of AC. Therefore, the characteristic of an inductor is to pass DC and block AC; the higher the frequency, the greater the coil impedance. Inductors often work together with capacitors in circuits to form LC filters, LC oscillators, etc. In addition, people use the characteristics of inductance to manufacture chokes, transformers, relays, and other devices. Passing DC: refers to the inductor presenting a conductive state to DC. If the resistance of the inductor coil is ignored, DC can pass through the inductor "unimpeded." For DC, the coil's own resistance has very little hindering effect, so it is often ignored in circuit analysis. Blocking AC: When AC passes through the inductor coil, the inductor presents a hindering effect to the AC. This hindrance to AC is the inductive reactance of the coil.

PRO MAX 480W 24V 20A 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 ribbon and moving-coil microphones, as well as the currently widely used condenser and electret microphones. The working principle of a moving-coil microphone is that human voice causes the diaphragm to vibrate through the air; then, the electromagnetic coil winding on the diaphragm cuts the magnetic field formed by the magnet surrounding the moving-coil microphone head, generating a weak fluctuating current. The current is transmitted to the loudspeaker, which 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 a more 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 the two magnetic pole faces, 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 surface is coated with an electret film and grounded, while the other plate is connected to the gate of a field-effect transistor (FET). A diode is 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 resistance, its output end must also use a field-effect transistor to extract and amplify the voltage signal generated by sound.

PRO MAX 480W 24V 20A electrical component applications

The main application of a rectifier is to convert AC power to DC power. Since all electronic devices require DC, but utility power supply is AC, rectifiers are indispensable inside the power supplies of all electronic devices unless batteries are used. Converting the voltage of a DC power supply is much more complex. One method of DC-DC conversion is to first convert the power to AC (using a device called an inverter), then use a transformer to change the AC voltage, and finally rectify it back to DC power. Rectifiers are also used for demodulation of amplitude-modulated (AM) radio signals. The signal may be amplified (increasing the signal amplitude) before demodulation; if not amplified, diodes with very low voltage drop must be used. When using a rectifier for demodulation, care must be taken to match the capacitor and load resistor. If the capacitance is too small, excessive high-frequency components will pass through; if too large, the signal will be suppressed. Rectifier devices are also used to provide fixed-polarity voltage required for electric welding. Sometimes the output current of such circuits needs to be controlled; in this case, thyristors (a type of silicon-controlled rectifier) replace the diodes in bridge rectifiers, and their voltage output is adjusted via phase-control triggering. Thyristors are also used in railway locomotive systems at various levels to achieve fine tuning of traction motors.

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