Today to share the knowledge of the role of wireless charging tiles, which will also explain the role of wireless magnetization pieces, if you happen to solve the problem you are now facing, don't forget to pay attention to this site, start now!
< ul>1, resistance, capacitor, inductor, diode, transistor, etc. are commonly used components of electronic circuits. Here is a list of the top ten electronic components commonly used in the electronics industry, along with small GOO to know: A: resistance as a worker in the electronics industry, resistance is no one knows no one. Its importance is beyond doubt. It has been said that "resistance is the most used component in all electronic circuits."
2, baseThe electronic components are resistors, inductors, capacitors, diodes, audiodes, connectors, etc. Resistance Resistors can be divided into fixed resistors and adjustable resistors, the difference between them is whether the resistance value is adjustable. Resistors can also be divided into in-line resistors and patch resistors, which are distinguished according to the installation method of the resistance. In addition, according to the material process classification, the resistance can be divided into solid resistance, wire wound resistance, film resistance, sensitive resistance.
3, the development of electronic components is very rapid, in many fields have applications, the first generation of electronic components is the tube, the tube is very convenient to carry, the appearance is very delicate, the consumption of electricityThe amount is small, the life that can be used is very long, and it once caused a sensation in the market. After the appearance of the electron tube is the integrated circuit, the integrated circuit is composed of multiple transistors, the emergence of this product, so that electronic products into the miniaturization.
4, electronic components mainly include: resistors, capacitors, inductors, diodes, transistors (including field effect transistors), switches and relays. Resistance Resistance is the basic component in a circuit, its main function is to block the passage of current. In electronic circuits, resistance is used to control the magnitude and direction of the current. Their resistance values can be adjusted as needed to meet electrical requirementsOn the edge of the skeleton, sintered by high temperature. This resistor has a wide range of resistance values, low price, small temperature coefficient, good moisture resistance, and is also called thick film resistor.
Thick film resistor is also known as glass glaze resistor, its conductive film layer by glass phase (boron, lead, aluminum silicate glass, borate glass, etc.), conductive phase (such as Ru2O), organic adhesive (such as organic resin) in accordance with a certain proportion of the slurry sintered. The film thickness of this type of resistor is generally 10~50μm.
The parasitic capacitance of the glass glaze resistance is relatively small. The size of parasitic capacitance and the structure and material of resistanceGenerally speaking, the parasitic capacitance of the film resistor is relatively small. Glass glaze resistor is a thin film resistor, glass glaze powder is pressed and sintered according to a certain formula, with small size, light weight, stable performance, small parasitic capacitance and other advantages, suitable for high frequency circuit.
The r20 resistor is a patch resistor. The r20 resistor is a common type of patch resistor, which is a metallic glass glaze resistor. Its resistance is labeled r20, but this does not mean that its resistance is definitely 20 ohms. According to the patch resistance code rules, if the code is r20, its resistance value should be 0.20 ohms. There are many code rules for resistance patch resistors, the common ones are three-digit codes and four-digit codes.
Yes, the modulation modes commonly used in transmitters are divided into frequency modulation and amplitude modulation. The following will describe an easy to make, operating frequency of 7MHz, moderate power transmitter, the transmission distance of about one kilometer, can use the radio's shortwave band for reception. As shown in the picture: Modulation letter from XunfanThe number can be modified using the power amplifier part of the radio, or simply make a separate transmitter. The transmitting tubes can be selected from 2SC1970 and 2SC1971.
No. The receiver (radio) is to receive the weak electrical signal for frequency conversion, IF amplification and demodulation, and then the demodulated audio signal for audio power amplification, to promote the speaker to emit sound. The transmitter is the inverse process of the receiver.
The radio is changed to the transmitter: change the midcycle, change the IF frequency to high play, and then change the mixing to the required frequency, remove the magnetic bar and coil. If you change the lowThe microphone is amplified and the speaker is used as a pickup. The transformation can be successful. The radio is the receiving equipment of the sound broadcasting system, which belongs to the audio-visual electrical appliance. It restores the high-frequency signal received by the antenna to an audio signal, and adds it to the speaker to re-emit the sound.
is generally unlikely, the transmitter needs a certain amount of power, the battery is not taken up, and the radio has to be with short wave, like the general integrated circuit on the market, it is not easy to get, and even if it is changed to the transmission distance is limited, and there must be a transmission antenna, there must be a license from the radio management department, and it must be transmitted in the specified frequency. Anyway, even if there is hairThese things are also very troublesome.
1. Add capacitive filtering near the commutator where the DC motor power line is introduced; A reactor is inserted into the power line; The motor housing is reliably grounded; Current 10A is not large, you can consider using a shielded cable. Note: Power line refers to the motor control system output to the motor line.
2, the capacitor can only eliminate the radio interference generated by the brush spark, and has no effect on the motor life. brushyMotor life is mainly affected by brush wear and rotor reversing groove wear.
3, when the DC motor is running, the armature coil constantly transfers from the N pole to the S pole, at this time, the coil current constantly changes the direction, then the brush undertakes the commutation task, the commutation is likely to generate sparks between the brush and the commutator, the spark will emit high-frequency electromagnetic waves, will interfere with the radio equipment.
4, shielding the use of conductive or magnetic materials made of box or shell shielding, the interference source or interference object surrounded by cutting or weakening the interference field space coupling channel, to prevent its electromagnetic energyThe transmission of. The properties of the interference fields shielded on demand are different, which can be divided into electric field shielding, magnetic field shielding and electromagnetic field shielding.
5, DC motor capacitor, should be a brush motor. When the brush motor is running, sparks will be generated between the brushes, and the sparks contain complex electromagnetic interference, which will significantly affect other electrical equipment, especially radio devices. The parallel capacitance is to reduce this electromagnetic interference.
6, secondly, the commutator pole is also an important part of the stator. In a DC motor, when the current in the armature winding is reversed, sparks and radio interference are generated. In order to improve the commutation situation, the DC motor is equipped with a changeTowards the pole. The commutator pole is installed between the two adjacent main magnetic poles, and is also composed of an iron core and a winding, which is bolted to the frame.
This is the end of the introduction of the role of the porcelain and the role of the wireless charger, do not know that you find the information you need? If you want to know more about this, remember to follow this site. < / p >