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Last Updated on: Wednesday, October 18, 2017 05:04 AM

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DARKROOM CAMERA SHUTTER TIMER


This circuit was designed to control a film exposure shutter for a darkroom. It has 8 time steps ranging from 0.35 seconds to 4 seconds. It is activated by a foot switch and draws power from an external 12-volt DC supply.

Click on Drawing Below to view PDF version of Schematic

Circuit Dark Room Camera Shutter Timer Schematic designed by David Johnson, P.E.

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