Power Supply

Q1. What is a power supply?

A power supply is an electrical device that provides the required voltage and current to operate electrical or electronic equipment. It converts electrical energy from one form to another (e.g., AC to DC).

Q2. What is the lifespan of a power supply?

Typically, 5–10 years depending on design, quality, load conditions, and environment (temperature, humidity, dust). UPS batteries may need replacement every 2–4 years.

Q3. How do I maintain a power supply?

Keep it in a clean, dust-free environment

Avoid overloading beyond rated capacity

Ensure proper ventilation and cooling

Perform periodic testing and inspection

Q4. What is the difference between a regulated and unregulated power supply?

Regulated Power Supply: Provides constant, stable output voltage regardless of input changes or load.

Unregulated Power Supply: Output varies with load and input fluctuations.

Q5. What is an SMPS and why is it widely used?

SMPS (Switch Mode Power Supply) converts AC to DC using high-frequency switching. It is compact, lightweight, efficient, and widely used in computers, TVs, and industrial automation.

Q6. What is a UPS and how is it different from a normal power supply?

A UPS (Uninterruptible Power Supply) not only supplies power but also stores backup energy in batteries. It provides continuous power during outages, unlike a standard power supply.