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Author Topic: Coarse current adjustment on a STRONG Switcher power supply Dan Reiter Film Handler Posts: 74 From: Easton PA Registered: Jul 2002 posted 01-21-2009 10:49 AM                     We have a Type 62-80001 Supply that has been adjusted to only run from 0 to 40 amps, yet the tag and past history says 50-100. I know there is a way to set it, and the manual does show a "Fine" and "coase" adjustment. Is this the method, or could there be something deeper? Thanks in advance for any help! Dan  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 01-21-2009 03:25 PM                     I work in a 6plex that has X90's that uses these dual setting switchers and used the coarse as a guideline for min amp output for the bulb then the fine was to target it in to the recommended amp setting for that bulb. It then could be that your coarse setting was turned down almost all the way so you could run the unit at those low amp output settings. I'd run the fine pot all the way down then run your coarse up to min amperage of your bulb can run on, then do the fine pot to get your recommended bulb amperage settings. EG: I run a 2k bulb and I have the coarse setting down to 55 amps, then I run the fine up to 75 amps for our bulb run. Give this a whirl .. good luck - Monte  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-21-2009 07:44 PM                     I agree, Start with the coarse adjustment and have an accurate amprobe on the DC line, Re-set the fine adjuster in the middle of it's range and then sloooowly turn the corse adjuster to the value you need. Should work! Mark  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-21-2009 07:54 PM                     I usually set the fine in the middle and set the course for the mid point of the range that the lamp is designed for so the fine can be used to accurately raise the current over the bulbs life  |  IP: Logged

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