TY - JOUR
AU - PACKARD, JOHN C.
AB -  REPORT ON NEW APPARATUS COMMITTEE JOHN C. PACKARD, Chairman, BrookHne High School Mr. Charles S. Lewis of Wentworth Institute, Boston, showed a model alternating current generator designed and made by the more advanced boys in an electrical class to illustrate the generation of single phase and three phase voltages. A rotating magnetic field machined from a short piece of 3 inch steel shafting with its field coils energized from a 12 volt battery was rotated by hand at about 120 R.P.M. From two stationary armature coils on removable pole pieces voltage was brought off to a three wire single phase line, which was enough to bring 2 flashlight bulbs up to full brilliancy. All connections were clearly shown by white lines on a black terminal board from the armature coils to the bulbs. At this speed 2 cycle single phase voltage resulted as shown by flashing of lamps. The arrangement of the terminal board was such that the effect of balanced or unbalanced loads and also the result of a broken neutral line could be seen. One of the armature poles was now removed from its first position and, with a third pole similar to it, the three 
TI - REPORT ON NEW APPARATUS COMMITTEE
JO - School Science and Mathematics
DO - 10.1111/j.1949-8594.1933.tb14082.x
DA - 1933-02-01
UR - https://www.deepdyve.com/lp/wiley/report-on-new-apparatus-committee-kRb7rNluG3
SP - 206
VL - 33
IS - 2
DP - DeepDyve
ER -