Voltage converters are a category of transformers, often referred to as household transformers, power converters, and AC converters. The main function is to adjust the voltage, and the voltage can be adjusted up or down. Generally, the voltage devices on the market have 110V. Into 220V (increasing) or 220V to 110V (decreasing). The converter is used to convert voltage and is generally composed of a flame-retardant shell, a universal socket, a GB power cord, and internal core components (toroidal transformer). It can expand the use range of various instruments (devices) so that the automatic control system has more flexibility and wider adaptability. A signal is a form or carrier of information. In automatic instrumentation equipment and automatic control systems, one signal is often converted into another signal compared with a standard quantity or a reference quantity to connect the two types of instruments. Therefore, the converter is often two instruments (or Installation).
Voltage converter: A voltage-to-current converter is a circuit that converts an input voltage signal into a current signal. It is a voltage-controlled current source. In industrial control and many sensor application circuits, when the signal output is simulated, it is generally output in voltage. Electricity is measured by voltage. The higher the voltage, the stronger and more dangerous the equipment will become. When analog signals are transmitted over long distances in voltage mode, the signal source resistance or the DC resistance of the transmission line will cause voltage attenuation. The lower the input resistance at the signal receiving end, the greater the voltage attenuation.
To avoid the attenuation of the signal during transmission, only the input resistance of the signal receiving end is increased, but the increase of the input resistance of the signal receiving end reduces the anti-interference performance of the transmission line, is susceptible to external interference, and the signal transmission is unstable, thus transmitting over a long distance When analog signals are used, the voltage output method cannot be used, and the voltage output is converted into a current output. Besides, in many conventional industrial instruments, the current connection also requires the output to convert the voltage output into a current output.
If your electronic device is not dual-voltage, you can use an international power converter (also known as a transformer, voltage adapter, or international voltage converter). However, voltage converters are often large, bulky devices, so they are not very practical when traveling. If your device is not a dual voltage device, you need to use a converter, so it is best to leave it at home.
The DC 12V to DC 24V converter allows you to use a 12V power supply or battery to run 24V components. This industrial-grade 12V DC to 24V DC boost converter is very suitable for various applications, including vehicles, security systems, hospital equipment, telecommunications, home automation, etc.
With a strong waterproof structure-aluminum, alloy shell and epoxy resin potting make the converter waterproof, moisture-proof, and dust-proof. High efficiency-synchronous rectification, the power conversion efficiency exceeds 90%, and the calorific value is extremely low. Easy to install-The thin form factor and small size make it easy to install and integrate. Automatic protection-built-in overvoltage, under-voltage, overload, overheat, and short circuit protection; can be used after returning to normal.
For the use of household transformers connected to electrical appliances, for 220V to 110V household transformers, the 220V input of the transformer is connected to the city power, and the 110V input of foreign electrical appliances is inserted into the output socket of the transformer. The 110V to 220V household transformer is 110V connected to the city power, and the 220V input terminal of foreign appliances is inserted into the output socket of the transformer. The output socket of the household transformer is a universal socket, which can be connected to plugs of different shapes.
Converting information into a form that is convenient for transmission and processing requires that the information in the conversion process does not suffer from distortion, distortion, delay, etc. Therefore, there are certain requirements on the linearity, input, and output impedance matching and isolation of the converter: ① linear characteristics. The output signal Y and the input signal X of the converter are required to have a good proportional relationship, that is, Y=KX+A, where K and A are constants. ② Input impedance and output impedance. The input impedance and output impedance of the converter must be matched with the input and output instruments to obtain high conversion accuracy. ③ Isolation characteristics. The input circuit, output circuit, and power supply circuit should be isolated from each other on the DC potential, and the ground points of the input and output circuit F should be separated to improve the anti-interference ability.
Voltage converter (also known as DC-DC converter/switching power supply/switching regulator): The DC/DC converter is a voltage converter that effectively outputs a fixed voltage after converting the input voltage. DC/DC converters are divided into three categories: boost DC/DC converters, buck DC/DC converters, and buck-boost DC/DC converters.
Three types of control can be used according to requirements. PWM control type has high efficiency and has good output voltage ripple and noise. Even if the PFM control type is used for a long time, it has the advantage of low power consumption, especially under a small load. The PWM/PFM conversion type implements PFM control at light loads and automatically switches to PWM control at heavy loads.
At present, DC-DC converters are widely used in mobile phones, MP3s, digital cameras, portable media players, and other products. It belongs to the chopper circuit in the classification of circuit type.
Common voltage converters include plug-in boards, also known as row plugs, plug-in boards, wiring boards, and Hong Kong people call drag-line boards. After picking up the patch panel we usually use, in addition to the product name printed with the power converter, there are some electrical parameters, such as maximum voltage, maximum current, frequency, etc.
The DC-DC converter is generally composed of a control chip, an inductor coil, a diode, a transistor, and a capacitor. If the control chip alone is targeted, it is impossible to judge its merits. The characteristics of the peripheral circuit components and the wiring of the substrate can change the performance of the power circuit, so a comprehensive judgment should be made.
Modulation:
PFM (Pulse Frequency Modulation Mode): The switching pulse width is fixed, and the output voltage is stabilized by changing the frequency of the pulse output.
PWM (Pulse Width Modulation): The frequency of the switching pulse is constant, and the output voltage is stabilized by changing the pulse output width.
Generally, the performance of DC-DC converters with two different modulation methods, PFM and PWM, is different: the frequency of PWM and the method of selecting the duty cycle of PFM.
Choosing the right equipment according to your needs can depend on the type of equipment and the wattage consumed. CD/DVD players designed for use in the United States and Canada (110-120 volts) can be used in Germany with line voltages of 220-240 volts by using a step-down transformer that can handle 150 volts. -Power consumption of 200 watts (typical wattage of CD/DVD transformers).
Besides, there are step-up/step-down transformers and converters that can be used for both step-up and step-down. You can find a variety of step-up/step-down transformers and converters on our website, ranging from 50 watts to 20,000 watts. These transformers allow you to use electronic equipment anywhere in the world.
The size of the voltage converter is defined by the wattage, so before selecting the voltage converter, you also need to know the power of the device to determine the appropriate voltage converter to buy. This information can be viewed through the instruction label on the device. If the wattage or W is not found on the label of the device, the amperage (also called amperage or A) may be found. It can be converted to wattage to select the correct converter. If only the rated current is displayed, multiply the input voltage by the rated current to find the rated power. Make sure to buy a power rating that is 2 to 3 times higher than the equipment you plan to run, because some equipment needs a surge when it is turned on, so that a safe conversion can be guaranteed. If you still have doubts, purchase the converter with the highest power, too much wattage will not cause any harm, but if the power is insufficient, the device will not work.
For items that require a high-power power supply (TV, power tool, laser printer) for the first time, please use a converter that is three times more powerful than the device. Therefore, a 500W tool requires a 1500W converter to convert it safely and successfully. Different equipment has different needs.
When buying a transformer , remember to set asides at least 100% of the profits from surges/spikes . Some items (such as TVs and computer monitors ) have spikes when turned on . For these products , you need to purchase a voltage converter transformer that is at least 3 times the product capacity . For power tools , laser printers and heating devices such as coffee machines , rice cookers , toasters , microwave ovens , lasers , halogen lamps or fluorescent lamps , you must leave a margin of 3-4 time higher than the rated power . There is no harm in buying a transformer whose rated power is much higher than the power listed on the equipment .
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1 . Before using , it is necessary to confirm that the capacity of the voltage converter is sufficient . It is recommended that the power of the voltage converter is 10% higher than the rated power of the electrical appliance , to ensure that the converter can normally drive the electrical appliance , and secondly , to extend the use of the converter life .
2 . It must be ensured that the output voltage of the converter conforms to the voltage range required by the appliance (220V to 110V voltage converter can be connected to 100V-120V appliances , 110V to 220V voltage converter can be connected to 220V-240V appliances ).
3 . After being used , it needs to be powered on for 15 minutes before warming up and then connected to the appliance ; in addition , it is best not to run for a long time in daily use , and the power of the converter needs to be disconnected when not in use .
Voltage transformers and converters perform the same function , but their differences are related to their application . A transformer is something you will use with electronic equipment . It can handle complex power requirements such as integrated circuits . Electrical transformers can also be used continuously to power electrical equipment such as air conditioners and other equipment that operates in hours or days .
Voltage converters are smaller stroke size converters , designed for discontinuous use , can be used for boost and buck , and are generally used for electrical projects with heating devices or motors , such as hair dryers , steam irons , small Fans and small bathroom and kitchen appliances are best used . The converter can shorten the use time .
Using the n international power converter for more than a few hours will cause overheating and may cause a fire . The power plug must also be unplugged when not in use . Although the transformer is designed for long-term or continuous use , it is best to unplug the transformer when it is not in use to extend the service life . Before using a voltage converter/transformer , be sure to check the power of the device .
Plug adapters are completely different from voltage converters and transformers . A n outlet adapters match the shape of a specific plug used in another country or region . For example , type B plugs that are common to the United States and Canada cannot be inserted into British sockets , while British typed G plugs are standard sockets . Therefore , the adapter will match for compatibility . However , without a voltage transformer or converter , you cannot continue to plug the 110-volt clock into a German wall outlet . Plug adapters adapt the plug to the wall ; voltage converters and transformers perform similar functions , albeit with voltage . They are not mutually exclusive .