Great video and info. Now something for those who like building high voltage power supplies using these HEI systems: Some folks mimic the 'pick up' coil's output using a 555 timer circut to produce a 'no moving parts' coil driving circuit. These timers actually connect to the control module and seem to work well. But unfortunately these timers are more prone and set up as a 50% duty cycle output; not a 12-12.5% most ignition systems comfortably run at. The 50% duty cycle is okay for many applications outside and beyond automotive applications but not so much for proper "dwell" time and longevity of one's coil. Again, proper "dwell" in either an HEI or points system usually operate in the range of 12.5% duty cycle, otherwise leaving the ignition coil (in the case of an HEI type) discharging for a longer time and consequently a shorter charge time. This will not hurt the coil per say, but at higher frequencies will reduce the coils over-all performance and voltage output. For those who wanted to know.😅
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Great video and info. Now something for those who like building high voltage power supplies using these HEI systems: Some folks mimic the 'pick up' coil's output using a 555 timer circut to produce a 'no moving parts' coil driving circuit. These timers actually connect to the control module and seem to work well. But unfortunately these timers are more prone and set up as a 50% duty cycle output; not a 12-12.5% most ignition systems comfortably run at. The 50% duty cycle is okay for many applications outside and beyond automotive applications but not so much for proper "dwell" time and longevity of one's coil.
Again, proper "dwell" in either an HEI or points system usually operate in the range of 12.5% duty cycle, otherwise leaving the ignition coil (in the case of an HEI type) discharging for a longer time and consequently a shorter charge time. This will not hurt the coil per say, but at higher frequencies will reduce the coils over-all performance and voltage output. For those who wanted to know.😅