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Bulb Mode en Canon EOS 40D optocupler

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#11 abejarutas
Hello Patrick:
The optocoupler Siemens LH1056 that I use is open collector technology, it is like a solid state relay or and it has no polarity, and that is an advantage. It also supports loads of 100mA, compared to the 50mA that supports the HCPL-817 that you indicate, according to the data sheet.
I have not had any problems, I feed the diode with a resistance of 330 ohms and directly the output controls my Canon G11 and the EOS 40D. Works fine.
I attached 2 links for better information:

schematic optocoupler]https://drive.google.com/file/d/0BxtwalY8tpnAbDNGNDhPSnAtM0U/view?usp=sharing]schematic optocoupler

http://pdf.datasheetcatalog.com/datashee...LH1056.pdf


I wish you good luck.
   Jesus
Jesús Serrano
Nature Photography http://www.objetivonatural.es
Video of Nature http://www.videonatura.info
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#12 daggel
Hi Jesus,
my local dealer didn't had the LH1056 on stock, so I gave the 817 another shot and it works fine. Don't have clue what the issue was, probably wireing.

Thanks for your help anyway.
With best wishes.
Patrick
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#13 abejarutas
It is always the same story: try, correct and learn, until finally ... everything works! Congratulation.
Jesús Serrano
Nature Photography http://www.objetivonatural.es
Video of Nature http://www.videonatura.info
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BMSBMS
2017-04-28, 16:08
Last Post: BMSBMS

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