| 摘要 |
<p>PURPOSE:To make the suitability of exposure identifiable by controlling the lighting operation of an LED for confirming the light emission of a flash lamp. CONSTITUTION:The confirmation signal generated when the light providing correct exposure is emitted from a flashlamp Xe is displayed by an LED. A monostable multi consisting of an inverter A1 and an NOR gate A2 energizes the LED for a constant time by this confirmation signal. When the 2nd confirmation signal based on th next emission is generated while this LED is displaying the confirmation signal, the monostable multi is reset by a reset circuit A3, and the operation of the LED is invalidated by a reset circuit A4 after lapse of a constant time.</p> |
