: High Q-factor resonance. The inductor is functioning beautifully with no shorted loops.
The blue ring tester is an indispensable tool for anyone repairing CRT monitors, televisions, or switching power supplies. By understanding the and building this simple circuit, you can diagnose complex magnetic component failures in seconds, which might otherwise take hours of troubleshooting.
When the pulsing transistor turns off, the energy stored in the external inductor transfers to this capacitor, initiating the ringing waveform. 3. Threshold Comparator Stage
The test probes are connected across the inductor under test ( Lxcap L sub x ). Together with internal capacitor C1cap C sub 1 , they form a parallel LCcap L cap C resonant tank circuit. blue ring tester schematic diagram exclusive
Before testing your first flyback transformer:
: A high-quality inductor with low resistance will "ring" many times, producing a decaying AC waveform.
If you are a professional electronics repair technician or a passionate hobbyist, you know that diagnosing shorted turn faults in flyback transformers, deflection yokes, and switching transformers can be a nightmare. Standard multimeters often fall short, failing to detect the subtle magnetic changes caused by a single broken turn. Enter the . : High Q-factor resonance
Vibrates freely, creating a long train of decaying AC voltages.
For detailed assembly or a full schematic layout, resources such as the Blue Ring Tester Kit Assembly Manual from AnaTek Corporation or community-driven documentation on Scribd provide comprehensive diagrams. Help with Blue Ring Tester - General Electronics
The Blue Ring Tester counts these oscillation peaks and displays them on a LED bar graph. Exclusive Blue Ring Tester Schematic Diagram By understanding the and building this simple circuit,
To build a high-performance, stable tester, you must choose components that do not introduce their own losses into the circuit:
: If the inductor is healthy, the energy bounces back and forth between the inductor and capacitor, creating a decaying AC voltage waveform (ringing).