Inexpensive Isolation Transformer (Impromptu Setup) Circuit

  
Using two 12-V filament or power transformers, an impromptu isolation transformer can be made for low-power (under 50 W) use in testing or servicing. SOI is an ordinary, duplex ac recept-able.
Inexpensive Isolation Transformer (Impromptu Setup) Circuit - schematic

Use heavy-wire connections between the 12-V windings because several amperes can flow.




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