SR 4 GENERATOR SYSTEMS OPERATION GENERATOR AND REGULATOR COMPONENTS COMPONENT SEE FIGURE(S) DESCRIPTION A1 3 Sealed, non-serviceable, unit that controls the generator output. A2 2,4 Holds SCR CR9, diode CR10 and resistance capacitance circuits to give protection to these solid state components. C1,3 2,3 Capacitors that reduce voltage spikes that could cause radio interference. C2 2 Capacitor that accepts a charge when CR9 is "off" and gives first current flow when CR9 turns "on". CR1-6 7,8,9,10,11 Diodes that change the AC current from exciter armature L4 to DC current. CR7,8 7,8,9,10,11 Diodes that reduce voltage spikes that could damage CR1-6.  Con- ducts current around CR1-6 when the voltage gets to a certain level. CR9 4 Silicon controlled rectifier (SCR) that acts as a valve to limit current flow through exciter field L3. CR10 4 Diode that gives a path for current flow through the exciter field when CR9 is "off”. CR11 2 Diode that decreases voltage spikes that could damage CR9 and CR10.  Conducts current around CR9 and CR10 when the voltage gets to a certain level. E1-4 4,5,7,8,9,10,11,12 Heat sinks act as heat exchangers to lower the temperature of rectifiers. F1 2 Fuse that gives protection to regulator circuit. L1 3 Iron core suppression reactor decreases the shock load on the stator windings when CR9 turns "on". L2 2 Air core reactor that limits the current rise time when CR9 turns "on". L3 14 Copper windings on generator end housing.  Current through these windings causes an induced three phase AC current in exciter arma- ture L4. L4 5,12,13,14 Copper windings on the rotating field assembly.  Rectified current from this armature is the source for rotating field L5. L5 5,12,13 Copper winding on poles attached to the rotating field assembly. Current through these windings causes an induced three phase AC current in stator L6. L6 16 Copper windings attached to the generator housing.  Current induced in these windings is the power for the load. TP 2 Gives protection against too much heat in the stator windings. R1 2 Rheostat that gives adjustment for voltage droop. R2 2 Rheostat that gives adjustment for generator output voltage. 14