| 摘要 |
A strobe charging device includes a light-emitting tube; a main capacitor for accumulating energy and for supplying the energy to the light-emitting tube; a transformer circuit which includes primary and secondary coils in order to accumulate the energy of a power supply in the main capacitor; a control circuit for controlling a current flowing from the power supply to the primary coil; a current detection circuit for detecting a current flowing through the secondary coil; a time measuring circuit for measuring the time from when the control circuit stops a current flowing through the primary coil until the current detection circuit detects that the current flowing through the secondary coil reaches a predetermined level or until the current flowing through the secondary coil stops; a voltage detecting circuit for detecting the voltage of the main capacitor; and a determination circuit for determining the operation state of the device based on the measurement result generated by the time measuring circuit and on a voltage detected by the voltage detecting circuit.
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