A Buck-Boost transformer is a type of transformer specifically designed to adjust or "buck" (reduce) or "boost" (increase) voltage in a circuit. It is commonly used to correct slight voltage fluctuations in an electrical supply, either stepping up or stepping down the voltage by a small amount, typically around 10-20%. This transformer operates efficiently in situations where there are minor voltage imbalances, ensuring that equipment receives the correct operating voltage without the need for a large, more expensive transformer. Buck-Boost transformers are widely used in applications such as lighting systems, small motors, and HVAC systems to ensure stable voltage and protect sensitive equipment from voltage spikes or drops, improving the overall energy efficiency of the system. They are known for their compact design, low cost, and reliability in addressing moderate voltage variations.