DEL's right,
The nanjg 7135 chip based linear drivers used in Convoys are great with this emitter. More specifically don't use any more than three 7135 chips (1050ma) on the driver if the emitter is on an aluminum board or seven chips (2450ma) if the emitter is on copper. Adding more chips (amperage) beyond these limits will only increase heat without any corresponding increase in output (wasting battery power). Check out the graph in this link.
-Brian