CONTROL CIRCUIT OF ELECTROMAGNETIC SHUTTER

摘要

PURPOSE:To eliminate any inconvenience in shutter opening and closing operations even if the set exposure time is put in the state that it exceeds the maximum speeds of the shutter devices used by so constituting the circuit that several kinds of shutter devices of different maximum speeds are selected for the control box and may be electrically connected by means of connectors. CONSTITUTION:The circuit is so constituted that several kinds of shutter devices of different maximum speeds respectively provided with the electromagnetically driven control parts for opening and closing shutter blades may be selected and electrically connected by means of connectors to the control box which is built therein with the electric circuits for controlling exposure time by making use of the counter dividing oscillation output and is disposed with the exposure time setting part setting the exposure time by selecting the output terminals of the said counter on the operation surface. Electrical signals are output by making use of the signal parts provided by differing in the maximum speeds to the respective shutter devices and the signal outputs thereof and part of the foregoing counter outputs are led to a gate circuit which in turn generates the output signal corresponding to the exposure time of the maximum speed.