(2017-08-30, 10:55)SimenZhor Wrote: I don't understand where in your circuit you've used the optocoupler. I guess it's on the trigger cable somewhere, but why did you install it (what did you try to achieve)? And could you please provide photos and/or circuit diagrams of your setup?
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Hi SimenZhor:
First of all, thank you for answering me. I will try to explain myself better and apologize if I use the google translate.
1.- The optocoupler replaces the transistor according to the circuit that is attached. The resistance is calculated to activate the internal led, which in turn activates the output that can handle any device within the manufacturer's specifications.
2.- What I mainly wanted to do was take advantage of this material that I already had from previous experiments (IR barrier etc ...). It has the advantage of being an authentic electronic relay and completely isolates the circuit of the camera, not needing polarity or sharing the GND ... among other advantages.
3.- Attached is a simple electronic schematic for better clarification. I insist that everything works perfectly except Bulb point greater than 30 seconds.
[/url][url=https://drive.google.com/file/d/0BxtwalY8tpnAbDNGNDhPSnAtM0U/view?usp=sharing]schematic optocoupler
Reading Gunther's book and other threads of the forum, I see that Gunther says that in fact 30-second longer times are not advisable for TL, but I just try to find out if there is anything I do not do well. It would need a concrete workflow of the BULB ramp.
Sincerely