Blue Ring Tester Schematic Diagram Exclusive _best_ Jun 2026

A series of voltage comparators (or software thresholds) that count how many oscillations exceed a certain voltage level.

Older schematics omit the calibration trimpot entirely. Without RV1, the tester is unreliable for different inductance ranges. Our schematic includes a in series with R5. Calibration procedure: blue ring tester schematic diagram exclusive

The transformer winding is completely short-circuited or completely open. Tuning and Calibration Tips A series of voltage comparators (or software thresholds)

The inductor has a very high Q-factor. No shorted turns are present. blue ring tester schematic diagram exclusive

: In later design revisions, certain resistors (like R7) were modified from 2.2 kΩ to 510 Ω to enhance sensitivity for low-impedance devices like horizontal deflection yokes.