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Old Vivitar 283 with SB4 power supply
Old 10-15-2006, 01:04 PM   #1 (permalink)
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If anyone still has an old Vivitar 283 laying around and the SB4 power supply, can you check the power supply for me and tell me which side is the + side? I want to set mine up with a battery pack but don't want to guess at the pins and reverse the polarity.

Thanks Much.
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Re: Old Vivitar 283 with SB4 power supply
Old 10-15-2006, 02:03 PM   #2 (permalink)
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Mike,
The SB4 puts out 200 VDC at 4MA. The connector is keyed with shoulder notches on one side. That is the positive side of the connector.
Hope this helps.
Jim
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Re: Old Vivitar 283 with SB4 power supply
Old 10-15-2006, 04:18 PM   #3 (permalink)
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What I have done with my Vivitar 285 HV flashes is buy the Quantum battery adapter that fits the old Quantum 1 batter pack. This is a simple RCA male plug. You have to drill or notch a hole in the battery door. I go to the local wholesale electrical supply and buy the battery that fits the emergency lights in department stores (6 volt 4amp/hour). Then pick up a female RCA plug and wire it up. The ground is to the outside of the plug. I get the batteries for about $12 and use them for four or five years, then replace them. They are a sealed lead acid battery and recharge with no memory. The charger costs about $20. I have yet to run one completely dead in fifteen years of using them, sometimes shooting over two hundred full power flashes in an hour. I used a cell phone battery(the old bag phone style) from Radio Shack until they quit carrying them. I spend more for the bag (that fits on my belt) than I do for the battery. Just one way of keeping the costs down and keepin' on clickin'. Rick from Arkansas "Arkie"
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Re: Old Vivitar 283 with SB4 power supply
Old 10-15-2006, 11:58 PM   #4 (permalink)
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Thanks much!
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