​KembaraXtra-Computer Terms – brownout:
A brownout is a condition where the electrical voltage drops below its normal level for an extended period, but power is not completely lost. Unlike a blackout, electricity continues to flow, though at reduced and unstable levels.
This condition can be harmful to electronic devices such as computers because fluctuating voltage can cause components to malfunction or degrade over time. To protect systems from brownouts, a battery-backed uninterruptible power supply (UPS) is commonly used.