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The 650-A is an impedance bridge. | The '''General Radio 650-A''' is an impedance bridge introduced in 1933. | ||
==Links== | |||
* [https://archive.org/details/sim_general-radio-experimenter_april-may-1933_7_11-12 Robert F. Field, ''The Convenient Measurement of R, L, and C''. General Radio Experimenter, Vol. 7, Nos. 11 and 12, April-May, 1933]. | |||
[[Category:Impedance measurement]] | [[Category:Impedance measurement]] | ||
[[Category:Introduced in 1933]] |