Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 30,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 

Circuits designed by David Johnson, P.E.
Last Updated on: Tuesday, April 01, 2014 04:30 AM

Master Category List - Dave's Circuits

The contents & graphics of Discovercircuits.com are copyright protected.
LINKING to Dave's circuits is permitted but DO NOT COPY any files to your WEB SITE server



More  Bistable Multivibrator or Flip/Flop Circuits
Camera Circuits   Timer Circuits

 

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.


More  Bistable Multivibrator or Flip/Flop Circuits
Camera Circuits   Timer Circuits

Master Category List - Dave's Circuits
eMail David A. Johnson, P.E. about this circuit



HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2013 David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.