Views:102 Author:Site Editor Publish Time: 2019-10-08 Origin:Site
Power Inverter (Vehicle Power Supply) is a convenient power converter which can convert DC 12V DC power supply into AC 220V AC power supply. Here are some common problems of power supply inverters.
A: SMT is called automatic programming placement machine. SMT is actually a packaging form of resistor and capacitor components.It has high precision, small size, high degree of automated processing, and good component soldering reliability. The power inverter is to realize the processing and production of products through SMT.
A: All power supply inverters with high and low voltage alarm, protection and other parameters and functions realized by CPU microprocessor are called single chip microprocessors.
A: The simulator is a kind of machine that separates components to realize the functions of various parameters of power supply inverters.
A: The power supply inverter can convert DC12V to 220V. It has the following functions:
1) Input high and low voltage alarm and protection.
2) Overload protection.
3) instantaneous impact twice the rated power.
4) Overload and short circuit protection.
A: The PWM pulse is realized by the CPU microprocessor, and the low voltage 12V is changed to a DC voltage of about 300V by the high frequency transformer. Then the CPU outputs a 50 Hz AC drive signal to drive the power switch to operate. Through the successive conduction conversion of the power tube, an AC voltage of an average effective value of 220V in the form of a square wave is output.
A: The output voltage of the power supply inverter can be stabilized by its feedback confirmation. No-load and rated voltage changes less than 10V.
A: The power inverter fully considers the external environment. When an overload or short circuit occurs, the power inverter will automatically protect the power off.
A: The output frequency of power supply inverter refers to the period of output AC square wave. Its frequency is 50 Hz. The national power standard is 50 Hz. In general, the period is 20MS, F = 1/T = 50HZ.
A: Continuous power refers to the power supply inverters can work continuously under normal conditions.
A: Peak power refers to the power that the power supply inverters can withstand at the moment of start-up, usually refers to the load of motor type. When starting, the instantaneous start-up power, which is formed by large start-up current, is called peak output power.
A: The continuous power and peak power vary depending on the meaning of their expression.
Continuous Load = Current Value * 220 (AC Voltage)
Start-up Load = 2 x Power Value
Generally speaking, the startup load of an electrical appliance or electric tool determines whether the power converter is capable of driving it.
A: Usually, the load with inductance parameters, that is, the load with current lead voltage characteristics, is transformed into inductive load.
A: Generally, the load with capacitive characteristic parameters, that is, the load with voltage lead current characteristics, is called capacitive load.
A: The load characteristics are different. First of all, when selecting the load, it must meet the rated power of the power inverter. As long as the conditions of power supply inverters are satisfied, their capacitance and inductive load effects are the same.
A: The power inverter outputs an analog sine wave, while the other is a true sine wave.
A: The 220V voltage output from the power inverter is exactly the same as the city voltage.
A: The power inverter can only be used for input DC voltage of 11V-15V.
A: Below the input value, the power inverter issues a low voltage alarm, please pay attention to the power load. When the input voltage is low, the power inverter is automatically protected. Above this input value, the power inverter is automatically protected. When the input voltage is much greater than that, the power components of the power inverter are damaged.
A: Conversion efficiency of power supply inverters generally refers to the ratio of effective output power to total input power. It is understandable that the higher the conversion efficiency, the better.
A: No-load current refers to the current consumed by the power supply inverter without load.
A: The cooling fan of the power inverter mainly acts as a heat sink. The side panel fan is used to draw air to form air convection, so that the power components of the power inverter operate in a safe temperature environment.
As a power converter for DC-to-AC used in automobile mobile, the power inverter will bring convenience to the life, and it is also a must-have item for car.