What is the function of an inverter?
2 Answers
An inverter functions by converting direct current (DC) into alternating current (AC). There are two main connection methods for inverters: 1. Direct connection to the car battery, which provides higher power output suitable for more high-power appliances, but carries greater risks; 2. Connection through the cigarette lighter power converter, which offers lower output power but is sufficient for most small appliances. The inverter transforms DC power (from batteries or accumulators) into AC power (typically 220V, 50Hz sine wave). It consists of an inverter bridge, control logic, and a filter circuit. During operation, the inverter itself consumes a portion of the power, so the input power must be greater than the output power. The efficiency of an inverter is the ratio of its output power to input power, meaning inverter efficiency equals output power divided by input power.
When I go on road trips, I can't do without an inverter. It converts the 12V DC power from the car into 220V AC power for household use, so I can use various electrical appliances even in remote areas. Last time I went camping, I used the inverter in the car to power a small electric pot to cook instant noodles, while also charging my drone batteries, not to mention my phone and laptop. Its working principle is actually using electronic components to repeatedly cut off the battery's DC power to form pulses, which are then converted into sine wave AC power. However, you need to pay attention to the power rating. I usually use one below 1500W, as too high a power can damage the car's electrical system. It's recommended to start the engine to recharge the battery after using it for about half an hour when the car is parked.
