Impedance measurement in 4-wire to 2-wire converters

Details Impedance measurement in 4-wire to 2-wire converters Impedance measurement in 4-wire to 2-wire converters

1983-09-01

1986-07-22

Chin, Gary

Boots, shoes, and leggings

1791752C, 1791753R, 324 64, 324 57R, G01R 2714

Patent

active

046023380

ABSTRACT:
An oscillating input signal is applied to the 4-wire input terminals which is monitored while the 4-wire output terminals and the 2-wire terminals are also monitored. This procedure is performed with a first known reference impedance connected across the 2-wire terminals and then repeated with a second reference impedance similarly connected. A plurality of input frequencies may be applied over the range of 400 Hz to 4000 Hz.

REFERENCES:
patent: 3790723 (1974-02-01), Stewart
patent: 4214311 (1980-07-01), Nakashima et al.
patent: 4342089 (1982-07-01), Hall
patent: 4404636 (1983-09-01), Campbell, Jr. et al.
patent: 4408282 (1983-10-01), Hof
Bell, D. J., "A Computer Based, Four Terminal Impedance Measuring System for Low Frequencies", Journal of Physics E, Jan. 1975, vol. 8, No. 1, pp. 66-70.

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