Just got a blue ring tester and would like a little help

[sam67]

I have just received my blue ring tester today .It was already assembled and came with the little test coil and 9v battery..Must say i am impressed with how quick it came here to the uk.

Anyway would like a few tips if possible on what other things this will test ..

I have an old bestec psu apart that i am rebuilding..Now i have tested the transformer which is good ..

There is 2 pins on one side which i believe are the primary windings and 6 pins on the other side which i guess are the secondary windings ..

Now when checking a transformer do you also check the secondary side with the ring tester ? if so do i connect the probes to each pin and what readings should i expect on the 6 pin side (secondary) as i am new to this and would like to know how to get the best out of the tester.The manual on line does not say to much so i need some help from anyone who also has this model.

Another question ,can you test the passive pfc coil/ inductor with this ring tester ? this pfc coil /inductor was part of the bestec psu ..I have put the tester onto both of the pfc leads and it lights up 3 red and one yellow would this reading be considered good or is the ring tester not really meant to test the pfc /coil inductor.

sorry for all the questions but as you can see i am eager to learn and want a better understanding ..I do not have anyone here to ask so this forum has been a really big help to me.

Much appreciated

best

sam67

[sam67]

Re: Just got a blue ring tester and would like a little help

Anyone out there

[Krankshaft]

Re: Just got a blue ring tester and would like a little help

This tester will work on any inductive component. A transformer is just two inductors wound on the same core. The number of lights that light up depends on the Q of the inductor.

It's not a go no go tester. If the transformer or inductor is shorted or has shorted turns the Q will be lower and less LEDs will illuminate.

Also make sure the output testing leads aren't twisted together or you could get readings higher than normal.

Read the attached PDF for details and theory.

[sam67]

Re: Just got a blue ring tester and would like a little help

Thanks Krankshaft..