“Proto-type transformers” is not a commonly recognized term in the context of electrical transformers or transformer technology. Transformers are devices used to transfer electrical energy between two or more circuits through electromagnetic induction, typically by changing the voltage level and current characteristics.
It’s possible that the term “proto-type transformers” might refer to transformers used in prototyping or experimental phases of electrical or electronic projects. In such cases, transformers may be employed as part of the prototype circuit to test various aspects of the project, including power supply requirements, voltage conversion, or impedance matching.
If you have a specific context or application in mind for “proto-type transformers,” please provide more details, and I would be happy to offer more specific information or guidance.