Re: HL Tiger 1 Turret LED resistor
Posted: Sat Feb 02, 2013 2:55 pm
Frankly the best thing to do is snip the wires, remove the LED & fill the hole - its of little practical use and the mantlet look better without it.
I think there must be some tolerances in the selection of components. For example a 7.2v battery is between 8.4v and 6v full to discharged so that would put between 80mA to 44mA across the the LED with a 68ohm resistor. Which on paper looks way to high for the LED but it works so I don't loose too much sleep over it.westwick wrote: If I was to stick with a 68 ohm resistor it would give a current of (again rearranging ohms law) 4.2v / 68 = about 62mA, which seems a bit high to me. So I wonder why this was in the tank to start with. I can't really say for sure without seeing the circuit diagrams but I reckon the motor will be taking a chunk of the voltage in this section hence the seemingly low resistance value.
Any thoughts on this?
Ian.