| 摘要 |
The invention relates to an LED operating circuit comprising an insulating energy transmission DC/DC converter. Said converter comprises an inverter (14) having at least one switch (S1, optionally S2), a resonance circuit (15) fed by the inverter (14), a transformer (19) connected to the resonance circuit (15), a rectifier (22), and a control unit (G) which controls the at least one switch (S1, optionally S2) and is embodied such that it can modify the control frequency of the switch or the resonance frequency of the resonance circuit (15) in a first control mode to adapt the power provided on the secondary side of the converter, said control unit also being embodied to operate, according to the load, at least one additional control mode of the DC/DC converter influencing the provided power. |
