shield in transformer

MaxHeadRoom

Joined Jul 18, 2013
21,189
Usually between primary and secondary and connected to earth ground, in order to isolate any HF on the primary, usually seen in audio amps etc.
Also reduces capacitive coupling between pri & sec.
Max.
 

RichardO

Joined May 4, 2013
2,271
Also reduces capacitive coupling between pri & sec.
Max.
Sometimes a transformer with a shield is used in medical instruments to prevent dangerous leakage currents. When a patient is connected by electrodes even a small leakage current from the secondary to the primary can be fatal.
 
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