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The Ring Tester
 
 
 
  

The ring tester is an inexpensive and effective way to test any high Q (Q=Quality factor which for an inductor is equal to the inductive reactance divided by the series resistance) inductive component. It is especially useful for doing a quick check on flyback, line output transformers and other high frequency wound components like deflection yoke windings, SMPS transformers and inverter transformers. The LEDs on the left side show the Q of the device being tested, more lights indicates a higher quality factor. No lights = short circuit, red = low Q, yellow = medium Q, green = high Q.

 

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

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 assembly guide and user's manual 

 

 

 

You may also be interested in the BLUE ESR meter

 

Click here to visit the BLUE ESR meter sales page

 

 

 

If you have any questions or concerns please email us at contactus@preher-tech.com