12v 1000w Inverter, 12v to 120v/220v Power Inverter

Note: * The AC output is 1-Phase (L, N, G), NOT Split Phase like USA standard (L1, L2+N, G).

Pure Sine Wave Inverter Remote Control & LCD Display (Optional)

• Pure sine wave power inverter is available with remote control: wired control and wireless control.
• LCD shows input voltage, output voltage, output frequency, battery capacity and power.

Output Sockets (Optional)

Protection Function

• Low voltage: Alarm at first; voltage continuously reduces, LED Red light on & shut down.
• Over voltage: LED Red light on, shut down.
• Over load: LED Red light on, shut down.
• Over temperature: Alarm at first; temperature continuously rises, LED Red light on & shut down.
• Short circuit: LED Red light on.
• Input reverse polarity: Fuse burn-out.

Power Inverter User Manual

What is the main circuit of power inverter?

A power inverter is a device that converts direct current (DC) into alternating current (AC). It is composed of several key circuits that work together to achieve this conversion. The main components include the main circuit, control circuit, drive circuit, and auxiliary power supply. Here’s a detailed breakdown of each:

• Main circuit

DC Power Supply (Capacitor): Provides the necessary DC input voltage for the inverter.

Buffer Circuit: Protects the components from voltage spikes and transients.

Switching Bridge Circuit: Typically an H-bridge configuration, it switches the DC voltage in such a way as to create an AC output.

Filter: Smooth the output waveform to reduce harmonics and produce a cleaner AC signal.

Transformer: Steps up or steps down the voltage to the desired level.

These components work together to convert DC input into a stable and usable AC output, handling the energy-level processing efficiently.

• Drive Circuit

The drive circuit controls the switching devices, such as MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) or IGBTs (Insulated Gate Bipolar Transistors), ensuring they switch on and off reliably according to the control signals. It includes:

Gate Drivers: Provide the appropriate voltage and current to the gates of the switching devices to turn them on and off.

Isolation: Often achieved through optocouplers or transformers to isolate the control circuit from the high-power main circuit.

• Control Circuit

The control circuit is the brain of the inverter, managing its operation and performance. It performs several critical functions:

Feedback Collection: Monitors the output voltage, current, and other parameters.

Control Algorithm: Implements algorithms like Pulse Width Modulation (PWM) to regulate the switching actions for desired output.

Protection Strategy: Includes over-voltage, over-current, and thermal protection to prevent damage to the inverter.

Switch Signal Generation: Produces precise timing signals for the drive circuit to control the switching devices.

• Auxiliary Circuit

The auxiliary circuit provides necessary support functions, including:

Auxiliary Power Supply: Powers the control and drive circuits, often derived from the main DC input or a separate source.

Circuit for Control and Driver Chips: Ensures that the control logic and drive components operate correctly and are powered adequately.

In short, the inverter is a device that converts DC power into AC power.