LED tail strobe :: DSCN2067
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Frame/heat sink to hold 6 LEDs. Opening angle is 11 degrees to fit inside rudder. LED holes set at 20 degree angle. Weighs 90 grams. Back side. Metal heat sink slug must be thermally connected to frame but electrically isolated. LEDs bonded in with Emerson and Cuming Stycast 2850 FT and catalyst 23LV. Stycast is epoxy with ground alumina added. Grit prevents electrical contact. Stycst with the LV catalyst is very runny so I added some cabosil to thicken the mix. Through the microscope Wired with teflon wire, Voltrex heat shrink. Heat shrink is bonded in with gel superglue. Lens is Lexan, 1 mm thick. Current is 1/2 amp, this is NAV mode. Will stobe 6 amps using a circuit made of a 4555 and a Vfet. tail strobe schematic
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Through the microscope

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Frame/heat sink to hold 6 LEDs. Opening angle is 11 degrees to fit inside rudder. LED holes set at 20 degree angle. Weighs 90 grams. Back side. Metal heat sink slug must be thermally connected to frame but electrically isolated. LEDs bonded in with Emerson and Cuming Stycast 2850 FT and catalyst 23LV. Stycast is epoxy with ground alumina added. Grit prevents electrical contact. Stycst with the LV catalyst is very runny so I added some cabosil to thicken the mix. Through the microscope Wired with teflon wire, Voltrex heat shrink. Heat shrink is bonded in with gel superglue. Lens is Lexan, 1 mm thick. Current is 1/2 amp, this is NAV mode. Will stobe 6 amps using a circuit made of a 4555 and a Vfet. tail strobe schematic
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Gallery: Pix navigate UP Album: Jeff Peterson LNC 360 navigate UP Album: LED tail strobe navigate UP (accesskey 'U')
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