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DIY Scienscope fiberoptic light
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pharamousse



Joined: 21 Sep 2017
Posts: 10
Location: PARIS

PostPosted: Mon Nov 27, 2017 1:59 pm    Post subject: Reply with quote

Yes I'll do some test to see how it behave.
Next step will be to provide a global power for all my setup, I'm thinking about my 2
Yongnuo YN-560 IV flash Speedlite, I saw a topic, I think it's not a big deal.
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Saul



Joined: 31 Jan 2011
Posts: 911
Location: Naperville, IL USA

PostPosted: Mon Nov 27, 2017 2:15 pm    Post subject: Reply with quote

pharamousse wrote:
... I'm thinking about my 2 Yongnuo YN-560 IV flash Speedlite ...


BTW, for speedlights I'm using 6v 30A power supply
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Saul
Studio, horizontal and field setups
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pharamousse



Joined: 21 Sep 2017
Posts: 10
Location: PARIS

PostPosted: Mon Nov 27, 2017 2:59 pm    Post subject: Reply with quote

I think for the yongnuo twins, I need 6v 3A.
30A ? Maybe i got to make some research.
This video on YouTube can be a beginning for basics in powering speedlights
https://youtu.be/I_5HbVyeQqE
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Saul



Joined: 31 Jan 2011
Posts: 911
Location: Naperville, IL USA

PostPosted: Mon Nov 27, 2017 3:29 pm    Post subject: Reply with quote

pharamousse wrote:
I think for the yongnuo twins, I need 6v 3A.
30A ? Maybe i got to make some research.
This video on YouTube can be a beginning for basics in powering speedlights
https://youtu.be/I_5HbVyeQqE


Before had 5v 4a - it was slow for 2 or 3 Nikon SB-27 (depending on the speedlight power settings). Biggest problem is initial current jump. Power supplys on ebay are cheap, it is better to spend few $ more (only) than to be limited during the stacking process - now I can connect all 3 SB-27, ring speedlight at full power, nothing is screaming, heating, overloading, slowing etc. ... Smile

Regarding video - it is little bit too brutal for me Smile
I use dummy batteries, with power supply for studio and batteries outdoors. Before I used sealed acid 6v 7.4A battery (lasted forever), now, when 18650 became cheap - 2x 18650 in series with converter to 6v
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Saul
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