Blue Ring Tester Schematic Diagram Exclusive — !exclusive!

The Blue Ring Tester remains an indispensable piece of test gear that saves hours of guesswork when troubleshooting switch-mode power supplies and CRT television chassis. By understanding this schematic diagram and building your own device, you add a powerful, dynamic diagnostic capability to your electronics workbench that static resistance meters simply cannot match.

The is a legendary diagnostic tool among electronics repair technicians, engineers, and hobbyists . It offers an incredibly simple yet highly effective way to test high-Q inductive components—such as flyback transformers, deflection yokes, SMPS (switched-mode power supply) transformers, and ballast chokes—without removing them from the circuit board.

10nF (Polypropylene preferred for the tank circuit). blue ring tester schematic diagram exclusive

A transistor (e.g., BC547) or a microcontroller I/O pin drives the tank circuit with a sharp, microsecond-wide negative pulse to kickstart the resonance. 3. Signal Amplification & Comparator

A Blue Ring Tester is a specialized electronic instrument designed to perform a quick, non-destructive "health check" on high-frequency inductive components. Its primary purpose is to identify shorted turns within a coil—a common failure mode that is difficult to detect with a standard multimeter. The Blue Ring Tester remains an indispensable piece

While the is simple, this circuit is very sensitive to stray capacitance.

A momentary negative-going excitation pulse (typically generated by an onboard 555 timer circuit or a micro-controller tuned to a low frequency like 10Hz to 50Hz) shocks the tank circuit into oscillation through resistor R5cap R sub 5 2. The Comparator Stage (LM393) It offers an incredibly simple yet highly effective

: Fully assembled units or DIY kits are frequently available through AnaTek Instruments or Alltronics. Anatek Blue Ring Tester Assembly and Review HD