| 摘要 |
A DC digital starting device includes a voltage-increasing circuit, a first feedback control circuit, a frequency-varying circuit, and a second feedback control circuit. The voltage-increasing circuit provides a voltage for a load in a starting state and a normal working state. The first feedback control circuit detects voltage signals of the voltage-increasing circuit and the load and controls output voltage of the voltage-increasing circuit. The frequency-varying circuit is electrically connected to the voltage-increasing circuit for modulating frequency of the output voltage of the voltage-increasing circuit. The second feedback control circuit receives a voltage signal from the frequency-varying circuit and controls frequency of output voltage of the frequency-varying circuit.
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