Ignition Coil: A device, basically a transformer, used to step up the battery voltage to very high value of about 25 kV or even higher for causing spark at the spark plug electrodes for ignition of the charge. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostIdle screw Next PostIgnition lag