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Unless my math is WAY off (it IS early in the morning) for 9V with an ON current of 55mA - 80 mA, you'd need a resistance of 1636 Ohms - 1125 Ohms. The higher the current, the less the resistance, since they are inversely proportionate.

I'd say get a 1000 Ohm (1K) resistor and connect it in series with a 370 Ohm resistor. This would give you a total resistance of 1370 Ohms @ about 65mA using a 9V battery, which should be fine. It would be right in the middle of the range, so to speak. 1K and 370 Ohm resistors are readily available at Radio Shack.

Hope this helps!

[QUOTE="Migrate from As You Wish, post: 1928"] Unless my math is WAY off (it IS early in the morning) for 9V with an ON current of 55mA - 80 mA, you'd need a resistance of 1636 Ohms - 1125 Ohms. The higher the current, the less the resistance, since they are inversely proportionate. I'd say get a 1000 Ohm (1K) resistor and connect it in series with a 370 Ohm resistor. This would give you a total resistance of 1370 Ohms @ about 65mA using a 9V battery, which should be fine. It would be right in the middle of the range, so to speak. 1K and 370 Ohm resistors are readily available at Radio Shack. Hope this helps! :) [/QUOTE]

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