| 摘要 |
<p>An improved charger comprises: Transformer used to convert the high volt ac to low volt ac voltage or desired voltage, rectifier for converting bi-directional ac to uni-directional dc, filter to filter out or remove ac component which is present in the output of the rectifier, voltage regulator to main the required dc voltage even change in input, then microcontroller which is the backbone of said improved charger . It gives a continuous monitoring on the battery level whether battery is fully charged or not and whether call is received during the charging, if both conditions are true, the charging turns off by grounding all the current by microcontroller. There is a voltage and current amplifier to make microcontroller output desired as microcontroller output is very small. The charging is continued till battery is fully charged. Once battery is fully charged, the charging is turned off by grounding the current which is done by microcontroller on getting feedback. If charger is still plugged in, as soon as battery level falls down it will again fully charge the battery and on full charging, charging is turned off. This cycle continues till charger is not plug out from mains or till mobile is not detached from charger.</p> |
