Tesla Coil (IndustrialCraft 2)

The Tesla Coil is a machine in IndustrialCraft 2 that is used to damage players and mobs in a 9x9x9 around itself, ignoring Blocks between itself and its target.

Recipe
The Tesla Coil is created with five Redstone Dust, two Refined Iron, one Electronic Circuit, and one MV Transformer.

Usage
The Tesla Coil will draw up to 5,000 EU and store it in its internal battery. When a player or mob enters its range, the Tesla Coil will discharge its stored energy, damaging the target. The Coil will only function while receiving a Redstone signal, allowing the user to disable it at will.

While operating, the Tesla Coil will use approximately 2 EU per tick.

The Tesla Coil can handle up to Medium Voltage Energy; any more than 128 EU per tick will cause the machine to explode violently.

Damage
The size of the EU packets being delivered to the Tesla Coil will determine how much damage it does to nearby entities. When discharging after being inactive for a while, the Tesla Coil will do significantly higher damage than normal.
 * After a period of inactivity, the built up Energy allows the Tesla Coil to do increased damage.