Mini SSTC in CW

preview_player
Показать описание
big arcs from Steve's design
Рекомендации по теме
Комментарии
Автор

Any Idea why it jumps from one side of the top load to the other? A giant aluminum foil truck driving by?  seriously? probably following the "capacitive grounding mass" on the shelf?   Scott R

madebyoneman
Автор

Well that's new.... Blowing at it! I didn't think it would react so much, it kinda moved like blowing at fire. I'm going to become an arc-ologist... when I'm a big boy.
Nice work Mr E.
..Well it's that time, I've made the ZVS pcb. I just got to put the 5+5 turns on the flyback ferrite and let her rip. The day is young.. I'm going for it dude, I love the smell of ozone in the morning ;) .. Not so keen on burning Fets, fingers crosses. I got some irfp640 as backup.. The local supplier didn't have any 250s. Take care fella

deeds
Автор

Now that is some serious arcs going on! be safe my friend. I notice you proceeding with caution and can't blame you a bit! that one looks like it has a mean bite to it.

shazizz
Автор

Beautiful!! I’m curious though, why the excessive top load?

cbfull
Автор

Wow, that's some serious power. I'm surprised a half-bridge of IRFP260N's can survive ground arcs at those power levels.

Are you using the older schematic of Steve's Mini SSTC that includes the 555 start-up oscillator? I assumed that ground arcs could cause the antenna feedback signal to drop out, or jump to a higher harmonic and cause large amounts of heat to be dissipated in the bridge. Perhaps the start-up pulse sent by the UCC driver IC's is enough to kick the coil into life if the feedback signal is interrupted.

GrantE
Автор

Look at that charge on you ground out through the variac knob as you go to turn it down lol

Magneticitist
Автор

dude thats wicked i see you keep a good distance away from the coil now quite powerful for a mini as well most of the ones i've seen are no where near what you put together there ! we will be chatting later tonight stop by if your around ;-) later dude ..

dirkk
Автор

man i didnt realize you can crank steves up that high, what are you running on the bridge?

corbonzo