??? 01/13/10 10:36 Read: times |
#172423 - Leakage and bleeds Responding to: ???'s previous message |
There is no bleed resistor across C1/C2, so even a small leakage current through the Triac or D5/D6 will charge C1/C2 to full rectified mains. A bleed resistor is also highly recommended so that the capacitors discharge themselves in a sensible time after the unit is disconnected from the mains.
This circuit has no form of inrush current limiting, and almost certainly does not comply with European Union CE requirements. I would look at PFC (power factor correction) chips which charge capacitors in the way you want. |
Topic | Author | Date |
Flash Light Charging Problem | 01/01/70 00:00 | |
right side limiting | 01/01/70 00:00 | |
RE: Va and Vb woudl be isolated from each other | 01/01/70 00:00 | |
Leakage and bleeds | 01/01/70 00:00 | |
Phase angle control?![]() | 01/01/70 00:00 |