![this is what a 200V spark did… (note to self: jesse was right.. i need saftey glasses)
—
what happened:
i tested the coil that I made with a 1.5V (D-sized) battery (pictured below with the coil) to make sure it was magnetic. (it was =]).. (btw, the measured resistance of the coil is inbetween 3-4ohms)
i then bought an SCR and wired the anode/cathode in series with the coil with the capacitors in parallel. the gate was connected to a wire which i would manually connect to a 12V line in series with a 1k resistor.
i charged up the capacitors to 250 volts.. turned off my charing circuit… loaded my projectile into the proper location (1/8 of the way entering into the coil). and connected the gate of the SCR….
NOTHING..
i examine the circuit… everything is in order.. i check the voltage over the caps to make sure they’re still charged and they are… i wonder what went on… i unplugged the + on the caps connecting it to the boost converter and accidently left it hanging.. and second later while examining the circuit… a HUGE spark and a HUGE noise (sounded like a really big high pitched firework)..
i got discouraged and stopped working for the night..
this is the damage it left on the breadboard.. the hanging +’ve line scrapped against the ground… and it STILL left a 50V charge over the caps…](http://26.media.tumblr.com/VRhUzcWhajarlj64BDr5Ff0Lo1_500.png)
this is what a 200V spark did… (note to self: jesse was right.. i need saftey glasses)
—
what happened:
i tested the coil that I made with a 1.5V (D-sized) battery (pictured below with the coil) to make sure it was magnetic. (it was =]).. (btw, the measured resistance of the coil is inbetween 3-4ohms)
i then bought an SCR and wired the anode/cathode in series with the coil with the capacitors in parallel. the gate was connected to a wire which i would manually connect to a 12V line in series with a 1k resistor.
i charged up the capacitors to 250 volts.. turned off my charing circuit… loaded my projectile into the proper location (1/8 of the way entering into the coil). and connected the gate of the SCR….
NOTHING..
i examine the circuit… everything is in order.. i check the voltage over the caps to make sure they’re still charged and they are… i wonder what went on… i unplugged the + on the caps connecting it to the boost converter and accidently left it hanging.. and second later while examining the circuit… a HUGE spark and a HUGE noise (sounded like a really big high pitched firework)..
i got discouraged and stopped working for the night..
this is the damage it left on the breadboard.. the hanging +’ve line scrapped against the ground… and it STILL left a 50V charge over the caps…
