| 摘要 |
<p>A road vehicle battery charging system for a dual voltage electrical supply includes a conventional alternator/rectifier assembly for charging the main battery and a d.c. to d.c. converter connected to charge an auxiliary battery in series with the main battery. The converter includes an autotransformer with primary windings in series with respective transistors across the main battery and further windings connecting the transistor collectors in series with diodes to the auxiliary battery. The transistors form part of an oscillator which produces an a.c. waveform with a peak-to-peak voltage slightly less than twice the main battery voltage-the deficiency being made up by virtue of the further windings.</p> |
