![]() ![]() A rotary connector (Model 205) fulfills this condition by having mercury as an interface medium. In order to apply this type of method (which is in practice realised by the use of a lock-in amplifier) to a flipping coil system, one needs a connector that enables the rotation of the coil while maintaining electrical contact. It is known that one of the most effective means of noise reduction is to limit the bandwidth of the measurement. As a consequence, all the frequency components of the output voltage from the coil must be included and noise filtration becomes a major obstacle. The coil usually has a limited rotation-angle range within which the integration must be performed. Conventional flipping coil systems (Chavanne, 1989 ) employ multi-turn coils whose output is passed to an integrator or a programmable voltmeter for integration. ![]()
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