NE555 TIMER

The NE555 is one of the most popular and versatile integrated circuits ever created, but it is not a power component; it is a Timer IC.

Here are its core specifications and relevance to the inverter's control and safety features:

• Type: Monostable, Astable, or Bistable Timer.

• Function: Used to implement various timing, pulse generation, and oscillation circuits.

• Supply Voltage (V_CC): Typically 4.5V to 15V(or 16V maximum).

• Output Current: Low/Medium current output, capable of sourcing or sinking up to 200mA.

• Package: Typically DIP-8 or SOIC-8 (SMD).

• Relevance to Safety/Compliance: While not directly involved in the main power path, the NE555 would be used in the low-voltage control circuitry for safety and timing functions, such as:

  • Over-Temperature Delay: Providing a time-delayed shutdown or soft-start sequence when the thermal switch (120C protection) trips, ensuring a clean and controlled safety response.

  • Auxiliary Oscillator: Generating low-frequency signals for fan control or status LED blinking.

  • Fault Latching: Creating a latched circuit that holds a fault condition until reset, which is crucial for compliant safety mechanisms.