It seems like there might be some confusion in your question. "Transformers" typically refer to electrical devices used for voltage transformation, and "induction regulators" might be a term you are referring to in this context. However, induction regulators are not a standard term in the field of electrical engineering.
If you're referring to voltage regulators, they are devices used to maintain a stable output voltage from a varying input voltage. There are various types of voltage regulators, including linear regulators and switching regulators. Transformers can be used in voltage regulation indirectly, such as in some types of voltage stabilizers that utilize transformers to provide a constant output voltage.
If you're referring to something else with the term "induction regulator," please provide more context or clarify your question so I can give you a more accurate response.