Do not test a coil. With probes open (air core), the tester should show maximum ringing (Green LED). If it doesn't, your threshold comparator resistors are too sensitive.

Blue Ring Tester is a specialized diagnostic tool used to test the health of high-Q (low loss) inductive components, such as flyback transformers (LOPT), deflection yokes, and switch-mode power supply (SMPS) transformers. Anatek Instruments

Blue Ring Tester Schematic Diagram Exclusive [ SAFE ✔ ]

Do not test a coil. With probes open (air core), the tester should show maximum ringing (Green LED). If it doesn't, your threshold comparator resistors are too sensitive.

For Students:

For Teachers:

For All:

Transum.org is a proud supporter of the kidSAFE Seal Program