TM 10-3930-671-24 TA   SERIES   ELECTRONIC   ALTERNATOR   SYSTEM FOR   22,   30   &   45   AMPERE   12   VOLT   NEGATIVE GROUND APPLICATION FIGURE NO.  1 GENERAL  DESCRIPTION  -  The  Prestolite  "TA"  series alternator  system,  is  designed  for  dusty  or  hazardous environment  such  as;  industrial,  agricultural  or  marine service.  The alternator is not waterproof and should not be submerged. The  voltage  regulator  is  an  electronic  switching  device that  limits  system  voltage  by  turning  current  to  the  field (rotor)   winding   "on   and   off’   at   a   high   rate   of   speed. Temperature  compensation  is  provided  in  the  regulator circuit. ELECTRICAL SPECIFICATIONS - Figures 2, 3, and 3.1 depict, in graph form, the stabilized characteristics of the 22, 30, and 45 ampere, "TA" altemators. FIGURE NO.  2 FIGURE NO. 3 FIGURE NO. 3.1 TA ALTERNATOR SYSTEM REGULATOR INFORMATION The  TA  22  and  30  amp  systems  utilize  the  epoxy  filled, "RS" series regulator (Figure Number 4) and the 45 amp system uses the ’RF’ series regulator (Figure 4.1). F-270