IS4S Flightworthy Ignition Exciter Unit.
High-Energy Ignition Exciter with High-Tension Spark Output
IS4S developed the Ignition Exciter Module using capacitive-discharge technology to output a high-energy spark for ignition of a high-speed turboalternator. The spark output can be programmed for different spark energy and sparking rates. The spark can be enabled and triggered independently or automatically after power up. Combined with the matching Ignition High Tension Cable, the unit has the following performance attributes: 22-29 Vdc supply, 1.1 to 1.6 Joule output, and 2 to 4 sparks per second.