SYNCHRONOUS RECTIFIER

247

current in one half coil, and no unidirectional magnetization re-
sults in the transformer.

In the contact-making rectifier, Fig. 98, the two halves of the
rectified circuit, or battery, B, alternately receive the two suc-
cessive half waves of the transformer, T.

The voltage and current waves of the rectifier, Fig. 97, are
shown in Fig. 100. e is the voltage wave of the alternating sup-

FIG. 100.—Voltage and current waves of contact-making rectifier with,
direct-current rotor.
ply source,,from a to b. e\ and e2 then are the voltage waves of
the two half coils, am and bm, i: and i2 the two currents in these
two half coils, and io the rectified current, and voltage in the
circuit from m to c. The current, ii, in the one, and, i%, in the other
half coil, naturally has magnetically the same effect on lie pri-
mary, as the current, ii + i%.= i0, in one half coil, or the current,
io/2 = i, in the whole coil, ab, would have. Thus it may be said :
in the (full-wave) contact-making rectifier, Fig. 97, the rectified