How the ring tester works:

Many circuits including display drivers, SMPS, inverters and others contain low loss (high Q)

Components. The testing technique used in this design is based on the fact that many faults in magnetic

components result in increased losses or reduced Q.

Ring testing gets its name from the fact that a when fast voltage pulse is applied to a high Q circuit the tuned nature

of the circuit will produce a decaying AC voltage of several cycles. More cycles or “rings” means higher Q. Few

or no cycles indicates a possible problem in that component, a shorted turn in a coil or some other issue. This tester provides

a quick and easy way to track down such problems.

The BLUE Ring Tester Fully Assembled

BLUE ring tester professionally assembled and tested by Preher-Tech, includes a 9V battery

$70.00

In Stock

Price includes USPS Priority Mail shipping for all orders within the contiguous United States

Orders typically ship within 24-48 hours of purchase

Click here to download the user's manual 

The BLUE Ring Tester Kit

BLUE ring tester kit, includes a 9V battery

$55.00