We have designed a simple transformer ratio arm bridge for use in the First Year Electrical Engineering teaching laboratory. Although the experiment is based on simple and inexpensive components, it is sensitive and can be used to investigate unknown impedances over a wide frequency range.
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References
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CleverleyI. R.BrozelM. R., Int. J. Elec. Eng. Educ.26, No. 4, p. 384 (1989).
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SzeS. M., Semiconductor Devices, Physics and Technology, John Wiley (1985).
