(dual 4-stage shift register) or similar ICs to control the 8-LED sequence. Pulse Generation: A push-button activates a timer circuit (often using a
The is a specialized diagnostic tool designed to test high-Q (low loss) inductive components, such as flyback transformers and SMPS transformers, by measuring their "ringing" response. Originally designed by Bob Parker and popularized through kits by AnaTek , the circuit uses a fast voltage pulse to excite a resonant tank circuit, where the number of resulting oscillations—the "rings"—indicates the component's quality (Q) factor. Schematic Breakdown & Core Principles blue ring tester schematic diagram exclusive
A healthy coil with no shorted turns will ring for a long time. The AC voltage will decay slowly, allowing the LED driver to light up all 8 LEDs (reaching the "Green" zone). (dual 4-stage shift register) or similar ICs to
At the heart of the schematic is a momentary switch and a transistor or IC gate that sends a brief DC pulse into the component under test (L). This pulse "kicks" the inductor into resonance with a parallel capacitor (C) located inside the tester, creating a tuned tank circuit. 2. The Comparator Chain Schematic Breakdown & Core Principles A healthy coil
A shorted turn lowers the inductance significantly and increases the damping effect.
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