| Title |
Ballast Design for HID Lamps with Automatic Identification |
| Keywords |
HTD Ballast ; Electronic Ballast ; Lamp Identification |
| Abstract |
An electronic ballast with automatic identification between HPS and MH lamps is proposed in this paper. The behavior of the lamp impedance is studied at both cold-starting and warm-starting. Lamp identification is carried out by taking into account the rate of impedance changing at constant current driving mode just after ignition. The ballast consists of 8-bit microcontroller and LCC resonant inverter. |