Centrado Transformer

An isolation transformator is designed to address the problems associated with referencing its internal shields to ground. It is constructed with two isolated Faraday shields between the primary and secondary windings.
When properly installed, the shield, which is closest to the primary winding, is connected to the common power supply ground and the shield closest to the secondary winding is connected to the shield of the circuit to be isolated. The use of two shields in the construction of the isolation transformator diverts high frequency noise, which would normally be coupled across the transformator to the grounds of the circuit in which they occur.