Diagram Exclusive Patched | Blue Ring Tester Schematic

Did you build this exclusive version of the Blue Ring Tester? Share your PCB layouts and calibration experiences in the comments below. Have an exclusive mod? The community is waiting.

A: No. An LC meter measures inductance and capacitance. The Blue Ring Tester measures Q factor and loss—a different parameter.

Connect a known-good SMPS transformer primary winding. Adjust the variable resistor connected to the LED driver pin until all LEDs just light up. This establishes your baseline "good" reading. Troubleshooting Common Layout Issues blue ring tester schematic diagram exclusive

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The LED display gives you a quick, visual indication of coil health: Did you build this exclusive version of the Blue Ring Tester

The classic Blue Ring Tester circuit, originally popularized by Dick Smith Electronics and designer Bob Parker, relies on inexpensive, widely available components. Below is the functional schematic architecture.

: A row of 8 to 10 LEDs (traditionally bright blue) is connected to the microcontroller's I/O pins. The community is waiting

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 .

Short the test leads together. The display should show zero LEDs or only the first red LED.

The component likely has partial degradation or a high-resistance short.