| 摘要 |
A power supply oscillator circuit (1) for light sources and other equivalent electrical user devices of the type comprising at least one capacitor (19) interposed between a direct-current power supply source (2) and an output transformer (3), two transistors (11, 12) being interposed between the direct-current power supply source (2) and the capacitor (19) and having their corresponding control pole (10, 9) connected to a respective, and different, branch (8, 7) that originates from the high electrical potential terminal of the power supply source (2), the corresponding high-level output pole (16, 15) connected to a respective, and different, terminal of the capacitor (19) and the corresponding low-level output poles (18, 17) connected to the ground, along the branches (7, 8) there being at least one respective resistor (14, 13) that is connected upstream, with the interposition of a switch (6), to the high electrical potential terminal of the power supply source (2), characterized in that it comprises a control and management unit (22), which is interposed between the switch (6) and the branches (8, 7) provided with at least one respective resistor (14, 13), the unit (22) having at least one input terminal connected downstream to the line (5) affected by the switch (6) and at least two output terminals associated with the branches (8, 7) provided with at least one resistor (14, 13), the signal on the output terminals of the unit (22) being synchronized with the natural frequency of the circuit f 0 = 1 2 �¢ À �¢ LC
where C is the value of the capacitance of the capacitor and L is the value of the inductance of the transformer (3). |
