| 摘要 |
The table or display window lamp (1) has a supporting structure (2, 3), and a head (4) connected in articulated manner to the supporting structure. The head (4) has a first portion (10a) housing a cold-cathode bulb (12), and a second portion (10b) housing a supply circuit (11) for supplying the cold-cathode bulb; and the first and second portions are aligned on opposite sides of a portion (13) connecting the head (4) in articulated manner to the supporting structure. The supply circuit (11) has an input rectifier (26) having a first and a second output node (26a, 26b); a first and a second bias circuit (28, 29) connected to each other in parallel between the first and second output node of the input rectifier; a first and a second control transistor (30, 31) connected to respective bias circuits (28, 29) and to respective terminals of two primary windings (41, 42) arranged in series with each other, of a transformer (16), the secondary winding of which is connected to the cold-cathode bulb (12). The control transistors are low-saturation-resistance MOS types. |
