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Reply to "Disassembly of aluminum K-Line observation car"

560 ohms seems very high for incandescent lamps. If you cut the wires to the lamps measure the filiment resistence first. It may only be around 30 ohms, just a wild guess. A resistor equal to the filiment resistence will cut the voltage in half. That may or may not be enough to even light the lamp. The resistor itself will also generate heat so if you go that route keep it away from the plastic.

You can use an LED powered by AC if you put a resistor plus a diode in series with it. Best to go further and try and use LEDs. That will solve your heat problem.

Pete

Last edited by Norton

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