Your control box is looking good, what kind of safety features did you put in it? I see emergency stop and what does the switches and lamps do?

The lamps are used to know which safety is activated (When there is just the power supply connected the green light is on, if the circuit-breaker is passing through then the orange light comes on and if the electromechanical contactor is also passing through the red light comes on).
Moreover it is impossible to turn it on without a key

The rest is used by interrupter (the screen and the red buttons).
I'm programming the atmega of the interrupter


I calculated gate charge :

but I couldn't find gate resistor int

I also tried to calculate Fmax2,but I couldn't find RθJC, Pcond

But i compared the CM600DU-24NF with the 5SNS
I compared the CM600DU-24NF with the 5SNS
The 5SNS takes less time to activate and deactivate, Total power dissipation is much higher for the CM600

I also measured the inductance of my primary coil, I am at 7µH. Then I calculated it with JAVATC and it shows me 7.28µH
So I will start on 7µH and take access to the capacitor to be able to tune it between 6.5 and 7.5µ


otherwise the trolley has been painted, it already looks better 

Hello

Well, it's not moving very fast for the moment but it's going to change !
I'm finally on holidays !
I receive my function generator next Monday or Tuesday.
today I made the rolling base of the tesla :



tomorrow she's going to paint.

I have one more question about IGBTs
I found a 5SNS 0300U120100, not very expensive and not far from home
what do you think of this IGBT module ?

Here are the Datasheets :
https://datasheetspdf.com//pdf-down/5/S/N/5SNS0300U120100-ABB.pdf


Thank you in advance for your answers.
Alexis

Hi

Since I'm not the budget for big IGBTs, I have chosen to use FGA60N65SMD.
According to Mads Barnkob's painting, those if can hold 300 A Peak (http://kaizerpowerelectronics.dk/tesla-coils/drsstc-design-guide/igbts/).
So I'm going to put three in parallel which should make me 900 A peak
Here is the circuit :



What do you think?

Sincerely
Alexis

Merry Christmas and a Happy New Year !

Quote from: Mads Barnkob on November 02, 2018, 01:16:33 PM

Nice boards, I assume they are all homemade.

How did you do the silkscreen? And a little funny with a mirrored silkscreen sitting on the opposite side of a surface mount component board

I'm guessing that silkscreen is toner transfer? If so, nice trick, never tried it when doing my own PCBs.

That's exactly what it is.
I thought to myself if it works on copper it must work on bakelite
so I tried it and here's the result 

Thank you Mads Barnkob
indeed it was missing C3 and the +5v on IC5A
I based myself on your UD1.3b
I just added a hex-schmitt trigger gate at the output of the fiber optic receiver 

another modification I will make is to separate the different parts of the circuit on several PCBs 
it will be easier to do (of course all PCBs will be in the same metal box) 

alexis

hi

today I'm almost done making my control box 





it includes the entire power management system of the DRSSTC (a large relay controlled by several switches, the 230v filter and an emergency stop) 
it also includes the interrupter (which is not yet finished for him)

I agree that fibre optics is the best solution in terms of security
but on the picture above the receiver used is comparable to the one used   
https://www.digikey.fr/product-detail/fr/IF-D95T/FB123-ND/243780/?itemSeq=269844015
and it costs less than OPF 2412 (and other)

so if I replace an OPF 2412 with an IF-D95 will it work ?

Alexis

Thank you Mads Barnkob for your answer
it's true that I didn't go into too much detail

the primary coil measures 10µH
And the resonance frequency of the secondary is 130KHz
which must give me a 149nF MMC capacitor
what tolerance can be given to the capacitance of the MMC capacitor ?

my secondary winding makes about 2200 turns (cable 0.25 mm by 550 mm)
It is covered with 6 layers of polyester resin
the sticker is just a piece of paper, placed between the 5th and 6th layer of resin

how to know if wood is "conductive" ?
and what damage can it cause ?


kind regards
alexis

P.S : today I made the SD card reader