Just picked up an interesting universal bridge "RLC 10" on eBay. I cannot find a maker's name anywhere on this. It is similar to an H&B Inkavi and Pontavi combined, but uses transistors to generate the AC test signal and drive a center zero meter. There is no manual with it, just basic instructions on the back in Czechoslovakian, Russian and German. It uses an unusual 3 Volt battery, about 75 mm long and 20 mm diameter or square. It has an AC and a DC test button and a dissipation null control for inductance measurement.
Ranges:
10 mH, 100 mH, 1 H
0.1 Ohm, 1 Ohm, 10 Ohm, 100 Ohm, 1 KOhm, 10 KOhm (DC)
10 Ohm, 100 Ohm, 1 KOhm, 10 KOhm, 100 KOhm (AC)
100 pF, 1 nF, 10 nF, 100 nF, 1 uF
It has a scale from 0.5 to 20 and it can also do comparisons between components and show the deviation from the external standard.
One thing I cannot figure out is how to use the dissipation control since the center zero meter is phase sensitive - goes left to right and you can null the meter at various combinations. Suggestions? Adjust for the lowest or the highest inductance?