| 摘要 |
<p>A method in connection with a Transition Mode Flyback power source, comprising the steps of generating direct voltage as supply voltage for the power source; controlling the switch component of the primary circuit into a conductive state; determining the magnitude of the output voltage; forming a current limit for the current of the primary circuit; determining the magnitude of the primary circuit current of the power source; and controlling the switch component of the primary circuit in turns into a conductive state and a blocking state, depending on the magnitude of the primary circuit current. Forming the current limit for the primary circuit current comprises the step of forming the current limit in response to the magnitudes of the supply voltage and the output voltage in such a way that the current limit is decreased when the supply voltage increases and increased when the supply voltage decreases.
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