What circuit are you using to trigger your SCR? I'm building a smaller version of this unit for a tech-fest. I miss read the datasheet and fried a 5000 amp pulse capable SCR by putting the charged voltage to the trigger. It worked for a couple of test firings, but fried when I reached 120 volts.
Special request: can you shoot a tuna fish with that thing??? If not there's your next challenge: shoot a tuna fish 75 feet in the air. THIS HAS TO HAPPEN SOMETIME IN THIS WORLD. ...AND YOU CAN MAKE IT HAPPEN
Someone suggested thar I destroy a snowman for a Christmas video. Do you have any better ideas? I really don't know where I would find a tuna to launch.
Ok, well me and my friend have been dreaming about the "tuna shooter" for years. Basically there is a drawbridge that a boat is passing through and sometime during that the tuna is launched over the top like a fieldgoal, and preferably on to the hood of some randomn car. Far fetched, but it would be the greatest thing ever.
I kinda wonder though: you have a huge load of capacitors with a relatively small resistor. Wouldn't it be wiser to add a bigger resistor in there that could take the current better?
I accidently deleted a comment asking if I was in th emilitary. I was in the us Navy for 6 years. My ship was the USS Farragut. They said that in target practice that I even missed the water.
What circuit are you using to trigger your SCR? I'm building a smaller version of this unit for a tech-fest. I miss read the datasheet and fried a 5000 amp pulse capable SCR by putting the charged voltage to the trigger. It worked for a couple of test firings, but fried when I reached 120 volts.
jameslmorehead 2 years ago
I just used a 1 k resistor. the schematic is on my blog at bobdavis321 at blogspot
bobdavis321 2 years ago
What SCR are you using?
jameslmorehead 2 years ago
I forget the number but I think it is in the text on my blog just google bobdavis321
bobdavis321 2 years ago
why do you need a resistor anyways? Too much voltage going into the capacitors?
DragonChamber 2 years ago
Yes, and you need to charge them slowly.
bobdavis321 2 years ago
lol now i see why thirystors were needed to be invented lol
jaa93997 3 years ago
Special request: can you shoot a tuna fish with that thing??? If not there's your next challenge: shoot a tuna fish 75 feet in the air. THIS HAS TO HAPPEN SOMETIME IN THIS WORLD. ...AND YOU CAN MAKE IT HAPPEN
eastcoastbands 4 years ago
Someone suggested thar I destroy a snowman for a Christmas video. Do you have any better ideas? I really don't know where I would find a tuna to launch.
bobdavis321 4 years ago
Ok, well me and my friend have been dreaming about the "tuna shooter" for years. Basically there is a drawbridge that a boat is passing through and sometime during that the tuna is launched over the top like a fieldgoal, and preferably on to the hood of some randomn car. Far fetched, but it would be the greatest thing ever.
eastcoastbands 4 years ago
dam you should make a rail gun with that
PhazonSouffle 4 years ago
I dont really know how to make a rail gun. I will look into it.
bobdavis321 4 years ago
I kinda wonder though: you have a huge load of capacitors with a relatively small resistor. Wouldn't it be wiser to add a bigger resistor in there that could take the current better?
BarneySaysHi 4 years ago
A bigger resistor would take longer to charge the capacitors.
bobdavis321 4 years ago
I think he meant a higher wattage resistor not a higher value.
Tab54o 4 years ago
I accidently deleted a comment asking if I was in th emilitary. I was in the us Navy for 6 years. My ship was the USS Farragut. They said that in target practice that I even missed the water.
bobdavis321 4 years ago
we love pumkins, thats wy we destroy em...
great job:) but you should replace the resistor, or place it in a can of oil for cooling. more rapid charging and less heat in your machine.
Keep up the good work:)
building somethin like this is on my to-do list;)
TeslaCommander 4 years ago
That was just way too much fun!
bobdavis321 4 years ago
nothing better that destroying pumpkins.
thewelderdude 4 years ago