In an effort to measure the inductance of an audio transformer winding, a Maxwell-Wien Bridge has been recommended. The inductor details as best I know, the inductor will be near
1000 Henries with about 5000 ohms series resistance. If I measure at 1000Hz then then XL of the inductor is about 6 megaohms, equivalent to 25pf at 1000Hz. Here is the proposed standard schematic.Because of the low capacitance, I'm am concerned with stray capacitance in the setup I build. I'm asking for suggestions about how to build it to minimize strays. Do I want to build it on FR4 or would letting it hang free in air above the pcb be better? Or maybe it can be built so strays are balanced, although with a coil on one side and a cap/resistor on the other, that may not work.
On another topic; With a 1000 Henry inductor comes a lot of interwinding capacitance. It there any way to tease the amount of interwinding capacitance out?
I tried ringing the inductor, but the Q is so low, it is difficult.
Thanks, Mikek