DCAC car power supply CFRS10

DCAC car power supply, often called on-board inverter, is an indispensable power expansion device for modern vehicles.

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Detailed Description

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DCAC car power supply, often called on-board inverter, is an indispensable power expansion device for modern vehicles. It can convert the 12V or 24V direct current (DC) of the car battery into the same 220V alternating current (AC) as the household socket, instantly turning your car into a mobile energy center. Whether it is efficiently charging laptops and drone batteries, using small appliances on the go, or powering professional tools outdoors, a high-quality DCAC automotive power supply is the cornerstone of safety and efficiency.

　　1. DCAC automotive power supply core technology and purchasing guide

To choose a suitable vehicle-mounted inverter, you need to understand the following key technologies and indicators:

　　Output waveforms: at the heart of safety and compatibility

　　Pure sine wave:The output is a smooth and perfect sine waveform, which is exactly the same as the waveform of the home power grid.Highly RECOMmended for all applications, especially to ensure that power-sensitive equipment (such as medical equipment, precision instruments, electrical appliances) can operate efficiently, quietly, and safely without any risk of damage.

　　Modified sine wave:The output is a staircase analog waveform. The cost is lower, but it may cause the equipment to decrease in efficiency, generate heat, generate noise (buzzing), and long-term use may shorten the life of the equipment.

　　Rated power vs. peak power: match your equipment needs

　　Rated power:The power that the inverter can continuously output (unit: Watts). Always make sure the total wattage of all your devicesless thanRated power of the inverter.

　　Peak power:The short-term overload power that the inverter can withstand at the moment of startup (usually 2-3 seconds) is used to drive equipment with high starting current such as motors and compressors. Peak power is usually 1.5 to 2 times the rated power.

　　Conversion efficiency: related to energy utilization and heat dissipation

Refers to the ratio of output power to input power. High efficiency (usually high-quality products >90%) means less electrical energy is lost in the form of heat, placing less burden on the car battery. At the same time, it generates less heat and works more stably and reliably.

　　Security protection mechanism: guarantee of reliability

An excellent inverter must have comprehensive built-in protection functions, including:

　　Input undervoltage/overvoltage protection:Automatically cut off to prevent the car battery from being over-discharged or over-voltage damaging the equipment.

　　Over temperature protection:Automatically shuts down when the internal temperature is too high.

　　Overload and short circuit protection:It will stop working immediately when the output terminal is overloaded or short-circuited.

　　Reverse connection protection:Prevent damage caused by reverse connection of the positive and negative input poles.

　　2. FAQs

　　Q1: What is the maximum power inverter that my vehicle’s cigarette lighter interface can support?

　　A：Ordinary car cigarette lighter fuses are usually 10A or 15A. According to the formulaPower (W) = Voltage (V) × Current(A), under a 12V system, the maximum safe continuous power is approximately120W (10A) to 180W (15A). Therefore, even with a 300W inverter,NeverUse electrical appliances exceeding 150W on the cigarette lighter interface, otherwise it may blow the fuse or even burn the circuit.Any inverter over 300W must be connected directly to the car battery.

　　Q2: When using the inverter, does the car need to be started?

　　A：It is strongly recommended to use the inverter with the engine running, especially when the power is large. Because the operation of the inverter will quickly consume the battery power, if the engine does not run, the battery may lose power in a short period of time and the vehicle cannot be started. Small power (such as below 50W) can be used in the flameout state for short periods of time.

　　Q3: How to calculate how long the inverter can keep my equipment working?

　　A：A simplified estimation formula:Working time (hours) ≈ (battery capacity Ah × 10 × 0.8) / Equipment power W。

For example: a 60Ah car battery drives a 100W laptop. Working time ≈ (60 × 10 × 0.8) / 100 ≈ 4.8 hours. This is a theoretical value and is actually affected by factors such as battery age and temperature.To protect the battery, do not use it up.

　　Q4: Is there any difference in sound between pure sine wave and modified sine wave inverters?

　　A：There is a significant difference. When using a modified sine wave inverter, you may hear a noticeable "buzzing" noise from connected devices (e.g. fans, refrigerator compressors, chargers). The pure sine wave inverter is very quiet, and the sound of the equipment running is the same as when it is connected to the mains.

　　Q5: The inverter gets very hot when working. Is this normal?

　　A：A slight fever is normal. Our products have built-in temperature-controlled fans that automatically start cooling when the internal temperature reaches a threshold. As long as the rated power is not exceeded and the ventilation holes are not covered, it is normal. If it is hot or overheating protection shuts down, it may be overload or malfunction.

　　3. Troubleshooting Guide

When encountering a problem, please refer to the following process for preliminary diagnosis to ensure safety.

Fault phenomenon	Possible reasons	Troubleshooting steps and solutions
The inverter does not work and the indicator light does not light up	1. Poor contact in cigarette lighter or loose battery connection 2. The input voltage is too low (battery is out of power) 3. The fuse is blown	1. Check whether all connecting cables are plugged in tightly. 2. Start the engine and measure whether the input voltage is normal. 3. Check and replace the fuse (input/output terminal) with the same specification.
Alarm light flashes or beeps	1. Input voltage is too low/too high 2. Output overload 3. Internal temperature is too high	1. Start the engine to charge the battery, or check the generator. 2. Immediately disconnect all loads, reduce the number of devices and then restart. 3. Turn off the inverter and allow it to cool to room temperature, ensuring good ventilation.
There is input but no 220V output	1. The load power is too small and does not reach the startup threshold. 2. In protection locked state 3. Output terminal short circuit	1. Try to connect an electrical appliance greater than 50W (such as a desk lamp). 2. Completely disconnect the input power, wait 30 seconds and then reconnect. 3. Check whether there is a short circuit in the output cable and device plug.
The output voltage is unstable and the equipment works abnormally	1. The input cable is too long or too thin and the voltage drop is large. 2. The battery pile head is corroded or the connection is not firm. 3. The equipment power is close to the limit of the inverter.	1. For high-power inverters, original or thicker short cables must be used. 2. Clean and tighten the battery terminals. 3. Replace the inverter model with a higher power one.
Inverter automatically shuts down	1. Over-temperature protection 2. Overload protection 3. Battery low voltage protection	1. Turn off the machine to cool down and clean the ventilation holes. 2. Confirm that the total load power does not exceed the standard. 3. Start the engine to charge the battery.

　　Security warning:

　　strictly prohibitedUse in humid and flammable environments.

When installing and troubleshooting,be sureMake sure the vehicle is turned off.

When the high-power inverter is connected to the battery,The positive pole must be connected first, then the negative pole;When disassemblingRemove the negative electrode first, then the positive electrode。

Non-professionals are not allowed to disassemble or repair it by themselves.

　　5. Choose [your brand name] to inject peace of mind into every trip

In the field of mobile power supply, details determine success or failure. [Your Brand Name] DCAC car power supply has become your reliable choice due to its excellent quality:

　　Vehicle grade standards:It adopts automotive-grade components and PCB protection technology, is resistant to high temperatures and vibration, and can adapt to harsh vehicle environments.

　　Intelligent control chip:Built-in DSP digital control realizes fast response and precise protection, and the power conversion is efficient and stable.

　　Comprehensive security:From hardware protection to software monitoring, multiple security lines of defense are built to protect the safety of your vehicles and equipment.

　　Global service network:We provide products that meet international standards and complete after-sales support to help your business flourish around the world.