| 摘要 |
<p>1,253,520. Automatic voltage control. JOSEPH LUCAS (INDUSTRIES) Ltd. March 21, 1969 [April 1, 1968], No. 15506/68. Heading G3R. In a battery charging system for a vehicle of the type wherein the rectified output 4, 5 of a permanent magnet three phase alternator is regulated to maintain a predetermined voltage, one set of rectifier diodes 10, 11, 12 is provided with thyristors 13, 14, 15 each in anti-parallel connection with a respective diode and controlled by a conventional regulator comprising members 21----28, the arrangement being such that the thyristors are turned on or off when the voltage is above or below the predetermined value to respectively by-pass the alternator output or cause it to be applied to the battery 6. All the thyristors receive gate current from the regulator and thus the alternator output is always by-passed by one of the thyristors and diodes, only these members being provided with heat sinks. A transistorcontrolled warning lamp circuit indicates when the generator is not producing current, Fig. 2 (not shown). Application of the invention to a single phase permanent magnet alternator is described, Fig.3 (not shown).</p> |
