| Electronics > Beginners |
| Cell phone swichmode chargers safety and isolation? |
| << < (3/3) |
| Zero999:
There is a way to avoid the need for the Y capacitor, or at least minimise the leakage through it, without having an earth conductor. Add a screen between the primary and secondary of the flyback transformer and connect it directly or via a Y capacitor to the mains side. The coupling from the mains on the screen to the secondary, via the shield will be much less than a Y capacitor would cause and it will prevent the high switching frequency from being coupled to the secondary side. |
| Navigation |
| Message Index |
| Previous page |