Contributed to the GEO-Fex schematic database by Wayne Horner, this very simple and inexpensive circuit can be attached to a transformer’s secondary to determine whether or not it has a shorted winding.

Transformer Winding Short Tester Features:

• Requires only 6VDC
• Low-cost, readily available components

Price:

• ~$10 in components, not including enclosure and wiring

More Information:

• View the GEO-Fex Schematic Database
• View a Mouser Project File containing the required components