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Author Topic: leds for Strong Phase Controls Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 09-10-2009 08:15 PM                     I'll bet Mark is adding not only Cadmium but Lead for good measure to the contacts!  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 09-10-2009 10:45 PM                     It's highly possible that some of the components around the switch may have lead and cadmium in them.... I'm certainly not a true beleiver in lead free stuff... Mark  |  IP: Logged Carey Barber Expert Film Handler Posts: 143 From: Newport News, VA, USA Registered: Jan 2003 posted 09-11-2009 12:39 PM                     What is the difference between a phase control and a microswitch platter system? Can you tell simply by looking at them what system you have? And finally, is the only difference between the two located inside the brain, with the rest of the platter system being all the same?  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 09-11-2009 02:39 PM                        You can tell because the phase control will have a bigger box than the microswitch. Also, you can physically see the microswitch arm on said brains. When you swing the payout arm back and forth, you will hear a light "click" sound on a microswitch brain if it is working properly. Phase control uses an LED and an optical sensor inside. As the payout arm moves, more of the LED is visible to the sensor. Basically, the brighter the light on the sensor, the faster it will command the payout deck to spin (depending on the takeup variac's position, of course). Usually this is only around 5 or 10% faster than the takeup is spinning if the decks are timed correctly. Phase controls usually offer smoother payout where as the payout arms on the microswitch will bob back and forth from on to off, on to off. Microswitches are at either 0% speed or 100%, no in between. You can use both on the same platter system and you can even remove the guts from a brain and replace it with the guts of the other kind (though most people forget to move the roller when doing so).  |  IP: Logged Jack Ondracek Film God Posts: 2348 From: Port Orchard, WA, USA Registered: Oct 2002 posted 09-12-2009 03:17 AM                        OK, so back to the original subject. Does anyone know if those LEDs are commonly available... like from Mouser, Newark or the like? I think one of the past members, whos name I think is non-postable here has done this kind of work. I bought 6 phase control kits from him several years ago, & they've worked well for me.  |  IP: Logged

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