6015 



Apparatus for Variable Currents 



Arch. Sc. Ps. Nt. 



electrostatic. Guye, C. E. 



4 (1897) 589. 

 , for high potential alternating currents. 



Arno, R. Tor. Ac. Sc. At. 33 (1897) 593- or 



827-. 

 errors in measurements. Gray, T. Am. As. 



P. (1899) 123-. 



Ganz. Blathy, 0. T. Elect. 20 (1888) 612-. 

 . Fleming, J. A. Elect. 20 (1888) 670-. 

 improved, Peloux's. Mohlenbruck, H. Laus. 



S. Vd. fill. 35 (1899) xx-. 

 and maximum demand indicator, combination 



integrating. Barker, T. Elect. 45 (1900) 



862-. 

 with mirror-reading. Friese, E. M. Elekt- 



tech. Z. 14 (1893) 209-, 221-, 244. 

 percentage accuracy. Wilberforce,L.R. Elect. 



20 (1888) 580-. 

 2, by Siemens and Halske. Kbpsel, A. Berl. 



Ps. Gs. Vh. (1888) 45-., 

 universal. Guilbert, F. Eclair. Elect. 7 (1896) 



391-. 

 Walker's. Anon. Tel. J. 17 (1885) 142. 



6015 Variable Currents, Appa- 

 ratus for Determining the 

 Character of. 



(See also 5705.) 



Elect. 



(1898) 



Crawley, C. W. S., <& Hawes, F. B. 0. 



15 (1885) 46-, 63-. 

 Braun, F. A. Ps. C. 60 (1897) 552-. 

 Benischke, G. D. Nf. Vh. (1900) (Th. 2, 



Halfte 1) 36-. 

 Analyser. Hicks, W. M. Elect. 34 (1895) 



698-. 

 , harmonic. Des Coudres, T. Berl. Ps. Gs. 



Vh. (1898) 129-. 

 , . LeConte, J. N. Ps. Ev. 7 



27-. 



Currents and E.M.F.s, rapidly varying, instru- 

 ment for recording. Duddell, W. D. B. 



Elect. 39 (1897) 636-. 



of high frequency, apparatus for measure- 

 ment. Gaiff'e, G., & Meylan, E. C. E. 122 

 (1896) 990-. 



and low frequencies, apparatus for 



measurement. Arsonval, d\ Par. S. Bl. 



Mm. 47 (1895) (C. R.) 502-. 

 , sinusoidal, special system of 2 coils traversed 



by. Rossi, A. G. N. Cim. 8 (1898) 5-, 



353-. 

 , transient, study by electrodynamometer. 



FitzGerald, G. F. Dubl. S. Sc. P. 4 (1885) 



341-. 

 , triphase, measurement. Arno, R. Eclair. 



Elect. 22 (1900) 379-. 

 Curve indicator. Lutoslawski, M. Elekttech. 



Z. 17 (1896) 211-. 



recorder (cycle-curve). Callendar, H. L. 

 Elect. 41 (1898) 582-. 



tracer. Rosa, E. B. B. A. Ep. (1897) 

 571- ; Ps. Ev. 6 (1898) 17-; Elect. 40 (1898) 

 126-, 221-, 3l8-. 



6010 



Curve tracer. Townsend, F. Sc. Abs. 3 (1900) 

 554-. 



Curves of 2 currents, apparatus for photo- 

 graphing simultaneously. Hotchkiss, H. J. 

 Ps. Ev. 8 (1899) 152-. 



, delineation. Fleming, J. A. Elect. 34 



(1895) 460-, 507-. 



, determination. Frolich, 0. Elect. 28 



(1892) 59-. 



, galvanometer for photographing. Hotch- 

 kiss, H. J., & Millis,F. E. Ps. Ev. 3 (1896) 

 49-. 



, method of recording. Switzer, J. A. Ps. 

 Ev. 7 (1898) 83-. 



, projection apparatus. Peukert, W. Elekt- 

 tech. Z. 20 (1899) 622-. 



, vibration-, of telephone, alternators, etc., 

 optical projection. Frolich, 0. Berl. Ps. 

 Gs. Vh. (1889) 31- ; Elekttech. Z. 10 (1889) 

 65-, 345-, 369-. 



Frequency, apparatus for determining. Moler, 

 G. S. Ps. Ev. 4 (1897) 411-. 



indicator. Campbell, A. Elect. 37 (1896) 

 437-. 



. Yundt, G. J. [1899] Sc. Abs. 3 (1900) 



71. 

 , measurement by vibrating wire. Carpenter, 



H. V. Elect. 43 (1899) 629-. 



meters. Campbell, A. L. Ps. S. P. 14 



(1896) 267- ; Ph. Mg. 42 (1896) 159-. 



. Aliamet, M. Sc. Abs. 1 (1898) 72. 



Galvanometer, measurement by. Cheesman, 



L. M. Berl. Ak. Sb. (1882) 741-. 

 Oscillographs. Blondel, A. [1893-1900] C. E. 



116 (1893) 502- ; Eclair. Elect. 11 (1897) 



158- ; As. Fr. C. E. (1898) (Pt. 2) 191- ; 



Sc. Abs. 2 (1899) 675-; 3 (1900) 63-; 4 



(1901) 512-. 

 , induction-. Abraham, H. C. E. 124 (1897) 



758- ; Eclair. Elect. 11 (1897) 145-. 

 Period-counter. Stdckhardt, E. Elekttech. Z. 



20 (1899) 873-. 



Phase difference in alternate-current electro- 

 lysis. Cooper, W. R. Elect. 35 (1895) 541-. 

 between current and E.M.F., instrument 



for measuring. Cardew, (Maj.) P. E. S. P. 



56 (1894) 250-. 



, electrodynamometer for measuring. 

 Rossi, A. G. N. Cim. 7 (1898) 319-. 



and electric wave indicator. Thomson, E. 

 Tel. J. 22 (1888) 108-. 



indicator. Puluj, J. Wien Ak. Sb. 102 



(1893) (Ab. 2a) 815- . 



and synchroniser, optical. Moler, G. S., 



& Bedell, F. Elect. 33 (1894) 210. 



meter. Trowbridge, J. Am. J. Sc. 43 

 (1892) 232-. 



. Derr, L. Elect. Ev. 37 (1895) 24-. 



. Tuma, J. D. Nf. Vh. (1897) (Th. 2, 



Halfte 1) 49-; Wien Ak. Sb. 106 (1897) 



(Ab. 2a) 442-, 521-. 

 . Armagnut, . [1900] Sc. Abs. 4 



(1901) 509-. 

 , direct-acting. Bruger, T. Elekttech. 



Z. 19 (1898) 476-. 

 , tangent. Arno, R. Tor. Ac. Sc. At. 32 



(1896) 353- or 533- ; 33 (1897) 499- or 729-. 



738 



