Lesson 1/Learning Event 2
SOLID-STATE VOLTAGE REGULATOR
FIGURE 17. SOLID-STATE REGULATOR CIRCUIT.
This regulator is a static unit that is totally electronic in operation. In this configuration, the
contact points are replaced by zener diodes. The zener diodes produce a signal to the base of a
transistor whenever the electrical system voltage reaches the desired level. This signal reduces or
shuts off field current to reduce or stop alternator output. When thesystem voltage drops again, the