crosseyed wrote in post #4797596
I am using this flasher on my canon 350d with no modifaction, can it damage my camera?
I am using this flasher on my canon 350d with no modifaction, can it damage my camera?
Yes.
Michael Cream of the Crop  5,981 posts Likes: 3 Joined May 2006 Location: Perth, Western Australia More info | Jan 28, 2008 00:09 | #46 crosseyed wrote in post #4797596 I am using this flasher on my canon 350d with no modifaction, can it damage my camera? Yes. Michael
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lowcrust Senior Member  948 posts Joined Jun 2007 Location: Scandinavia More info | Jan 28, 2008 16:25 | #47 Has anyone ever heard of one actually getting fryed though? Not me. ~ BORN FREE - TAXED TO DEATH! ~
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crosseyed Member 68 posts Joined Feb 2006 Location: Adelaide, Australia More info | Jan 29, 2008 01:57 | #48 I have used it quite a bit with no problems... Canon 50D + 17-55 2.8 + 50mm 1.8 + ex430
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SolidxSnake Goldmember  1,656 posts Likes: 2 Joined Nov 2007 More info | Jan 29, 2008 17:22 | #49 crosseyed wrote in post #4805755 I have used it quite a bit with no problems...
Troubleshooting 101 (see also: LightRules,perryge):
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HikinMike Walkin' Like a Penguin Now!  More info | Jan 29, 2008 18:47 | #50 Before I didn't know any better, I used my old Vivitar 2600-D on my 300D and it still works. Now, I've been using my 5D for 6 months now and its still working. That said, I plan on getting a newer Vivitar 285HV soon... Images in the Backcountry
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Phil2009 Hatchling 1 post Joined May 2009 More info | May 26, 2009 15:01 | #51 b1gdaddy wrote in post #4434648 I was asked to mod the trigger voltage on an old vivitar 273 flashgun by my father in law. Trigger voltage was 327v. After mod it is now 5.24v. As this worked perfectly I will now mod my own 283 & 285. There is a little more room inside 283 & 285. The diagram  The components. 1 - 3020P Optotriac, 1 - Tic106D Triac, 1 - 330 ohm resistor, 1 - 5.6k ohm resistor. Also used heat shrink sleeve & 24 swg wire  The Victim, a rather tired looking Vivitar 273  The components in circuit  Took about 2 hours to complete, components just about squeeze in. Also took the time to clean sensor window & inner battery terminals. Result = 1 usable flashgun & 1 happy father in law!!
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digadv Senior Member 427 posts Likes: 1 Joined Oct 2007 Location: Dallas, TX More info | May 26, 2009 20:39 | #52 I did the same mod about a year ago with great results. In fact, I added an option for an external 6V supply (via a connector) which comes out the front of my 283.
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rudy_216 Senior Member 299 posts Joined Oct 2008 More info | May 26, 2009 22:19 | #53 I have done a number of these with both 4 AA battery and 2 AA battery flashes. But I leave out R2. For the SCR I use a C106 since it is smaller. I solder the opto-triac and the SCR together without interconnecting wires (using the component leads only). It makes for a smaller package. Sometimes I even cut the top half of the SCR off. Handy in some flashes that don't have much room.
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mongole Hatchling 1 post Joined Feb 2017 More info | Feb 24, 2017 10:02 | #54 Hi b1gdaddy,
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PhotosGuy Cream of the Crop, R.I.P.  More info | Feb 24, 2017 10:39 | #55 mongole wrote in post #18283747 Hi b1gdaddy, during my search for the modification of a Vivitar 273 for safe sync voltage, I stumbled over this post... This mod looks nice and doable... But one other thing I am interested in is: There are modifications (like this: http://www.photomacrography.net/forum/viewtopic.php?p=55625 ) for the Vivitar 283, to be able to regulate the flash output. Is there a way to do this with a Vivitar 273 as well?Greets, Mongole I don't know if it will work on the 273, so you'll have to research it, maybe in the blog. I can tell you that it works great in the 283. It's the Vivitar VP-1 Varipower Module FrankC - 20D, RAW, Manual everything...
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