| 摘要 |
PURPOSE:To display the current amount of charged electricity visually by the possible frequency of flashing, by converting the voltage of a capacitor into the possible frequency of flashing and by displaying the frequency, obtained by the conversion, visually. CONSTITUTION:A charging capacitor 1 is connected in parallel to batteries 2 through a power switch 16, and further connected to a switching circuit 4 composed of a strobe discharge tube 3, a tyristor circuit, etc. when the power switch 16 of a strobe is turned on, the charging of the capacitor 1 is started and according to its charged amounte, the display of a display part 7 increases gradually by five stages like 0, 1, 2.... Therefore, this display is viwewed to confirm that the strobe is usable even before the charged amount reaches a maximum, and the charged amount is confirmed by the possible frequency of flashing before the shutter is pushed. |
