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Author Topic: Correct Auto-Strike Zener for Super Lum-Ex and Irem combination Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-17-2009 09:29 AM                     I know the factory zener for the auto strike board is the wrong one for use with the lower voltage Irem rectifiers but does anyone know which zener is correct? I was thinking the zener shold be either 47 volts or 52 volts at 5 watts. Have changed these out many times but its been a while and I've forgotten. Thanks to anyone out there that might be able to refresh my brain!!! Mark  |  IP: Logged Bob Peterson Film Handler Posts: 9 From: Beacon Falls, CT Registered: Apr 2001 posted 07-17-2009 11:21 AM                     I have used a 51 volt 2 watter on Irem N3-X75 rectifiers with no problem. Their no load is typically 90 vdc  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-17-2009 02:25 PM                     Thanks Bob! Yesterday I did get two 52 volt 5 watt zeners so I would assume thats close enough. Mark  |  IP: Logged Bob Peterson Film Handler Posts: 9 From: Beacon Falls, CT Registered: Apr 2001 posted 07-17-2009 05:30 PM                     BTW Graingers has a 110 VAC SPST relay that is compact and enclosed w/push on terminals. It works real well for an Irem application. I believe it is a 4A711. Bob  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 07-17-2009 08:01 PM                     Strong has traditionally offered Three different auto-ignite boards for the Super Lume-X. They have since condensed it down to two...I know one uses the 51V zener. Steve  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 07-18-2009 04:57 AM                        51v sounds right to me. (I would have made only one board with selectable zeners if I had made it, so there would only have been one stock number. . . . zeners are cheap. Louis  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-19-2009 09:52 AM                     I agree Louis but thats just too logical of a thing to do for you know who!!!  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 07-19-2009 01:10 PM                     Czech Meopta has jumper so you can selct no-load voltage of rectifier  |  IP: Logged

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