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Bob's Blue2 Ring Tester
This device is an evolution of the widely known Bob Parker's Blue Ring Tester, this new design is much more sensitive and its circuitry allows for much longer, ringing measuring process, so make it suited to allow a very wide types of inductors, coils and transformers even to those of AC 50Hz and output power transformers of the audio circuits, could be measured, regarding to determine the DUT's quality resonant circuit.
This Ring Tester circuit has a polypropylene capacitor to facilitate the measurement resonance of the inductors, reducing signal losses and increasing the measurement efficiency, with this has resulted in a circuit that produces results with great measurement sensitivity on virtually every type of coils.
It is powered by two AA batteries which can also be rechargeable type, automatically shuts off after 5 minutes of non-use, has a single push button control, when turning on appears whirling patern, just to draw attention that is on. There is no available KIT version for this meter.
Only to Europe including shipping expenses 63€