|LCR Measuring Capability|
I have got as far as making the LCR bridge but I had to modify the original circuit.
1. The original soundcard used must have been capable
of driving speakers direct
The availability of some 10nF ,1% capacitors made this
capacitance box achievable. With parallel and series combinations it covers
1nF to 100nF . This has been all that is necessary to check the LMS bridge.
Inductance of course has the oposite quadrature phase. As in the origal
design all impedance measurements are made traceable to resistance measurements
made on a 4 terminal DVM. Link to present state
of LMS bridge write-up(7zip archive)