Model Airplane Wing Tip Flasher

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More Model Airplane Circuits Model Circuits

Model Airplane Wing Tip Flasher
designed by David A. Johnson, P.E.

The circuit below is designed to flash two white LEDs mounted at the wing tips of a model airplane. The flasher unit is powered by a 4.5v supply made of three AA or AAA 1.5v alkaline battery cells. The average current is about 2ma so a set of batteries should last about 1000 hours of flashing. The circuit uses one hex Schmitt trigger inverter to perform all the timing functions. A single n-channel FET drives the two LEDs, each with a peak current of about 20ma. The circuit flashes the two LEDs in a pattern typical of commercial airplanes.

Click on Drawing Below to view PDF version of Schematic