Battery charging systems for road vehicles

Patent · Mon Oct 26 23:00:00 EST 1981

OSTI ID:5774162

Allport, M J; Nicol, T; Wiley, D

A battery charging system includes an alternator with a rectifier connecting the alternator output to the battery. A voltage rectifier controls the current in the alternator field winding in accordance with the battery voltage. A transistor switch in the voltage regulator controls the bias current to the output stage of the regulator and is in turn controlled by a differential amplifier through a diode pump. The differential amplifier is connected to detect the presence of an A.C. On one phase of the alternator and causes the transistor to be switched off, disabling the output stage of the regulator, whenever no A.C. Signal is present.

• Assignee: Lucas Industries Ltd (United Kingdom)
• Patent Number(s): US 4297631
• OSTI ID: 5774162
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250902 -- Energy Storage-- Batteries-- Performance & Testing
33 ADVANCED PROPULSION SYSTEMS
330000* -- Advanced Propulsion Systems
ALTERNATING CURRENT
ALTERNATORS
AMPLIFIERS
BATTERY CHARGERS
CONTROL SYSTEMS
CURRENTS
DETECTION
ELECTRIC CURRENTS
ELECTRIC GENERATORS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
RECTIFIERS
SIGNALS
VEHICLES
VOLTAGE REGULATORS