940 L4-2.3L SOHC VIN 88 B230F (1992)
Current enters the voltage regulator via D+ and then flows to the integrated circuit (IC). A pulse is produced and sent to base transistor T1 which opens
and allows the pulse to flow further to transistor T2. From T2, exciter current is then led from the rotor to ground.
Engine running, voltage regulation
The regulator senses alternator voltage via D+. By varying the IC pulses it can regulate the current flow to the rotor and consequently alternator output
voltage
