12VDC TO 220VAC 300W MODIFIED SINEWAVE INVERTER RED (USED)

This specification describes a high-power 300W Modified Sine Wave Inverter Board (often nicknamed the "Red Board" due to its common PCB color). It is designed to convert low-voltage DC from a battery into high-voltage AC for household appliances.

• Input Voltage:12V DC (Typical range 10.5V – 15V

• Output Voltage:220V AC (Modified Sine Wave)

• Continuous Power: 300W

• Peak/Surge Power: Typically, 400W (to handle the "kick" when starting motors)

• Frequency:50Hz or 60Hz (depending on the specific regional version)

The "Red Board" is popular because it includes active protection circuitry that prevents the board from "frying" during common user errors:

If you connect a device that draws more than 300W (like a large drill or a hairdryer), the board detects the excessive current.

• How it works: The control chip (Dedicated chip/Microcontroller) monitors the current through a shunt resistor.

• Result: The board will either sound a buzzer or shut down the output to prevent the MOSFETs from melting.

If the 220V output wires accidentally touch each other, a massive spike of current occurs.

• How it works: The board uses ultra-fast sensing to detect the "near-zero" resistance of a short.

• Result: It kills the drive signal to the power transistors in microseconds, saving the board from a catastrophic explosion.

Unlike the smooth curve of a "Pure Sine Wave" (the power from your wall outlet), a modified sine wave uses a "stepped" square wave.

• What it runs well: Lights (LED/Incandescent), laptop chargers, fans, and basic TVs.

• What it may struggle with: Sensitive medical equipment, high-end audio systems (may hum), and some microwave ovens.