Vivitar 283 auto thyristor question

[j-dogg]

Should be good. I have a bunch of cheapo flashes here and need something I can turn the power waayyyyy down on. i've been ISO 100 and 200 in clubs here, can't hardly see what I'm focusing at lol

 

[Steve Smith]

The second item down on this page: http://www.graphic-fusion.com/vivitar285mods.htm details a variable power modification and shows a circuit diagram which includes the connector pin out.


Steve.

 

[djacobox372]

To adjust the power of a 283 manually the least expensive solution is to sell it and replace it with a 285.