Patent ID: 6785470
Filing Date: 2004-08-31
Classification: H05B

Abstract:
A strobe device comprising:a light-emitting tube; a main capacitor which accumulates energy and supplies 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, wherein the primary coil is connected to the power supply and the secondary coil is connected to the main capacitor; a control circuit which controls a current flowing from the power supply to the primary coil, wherein a current starts to flow through the secondary coil after the control circuit stops a current flowing through the primary coil; a current detection circuit which detects a current flowing through the secondary coil; and a determination circuit which determines that a malfunction is caused when the current detection circuit detects that a current does not flow through the secondary coil.