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Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Ok, finally, these are shipping out on Thursday to all the beta testers.
As an added incentive, anyone of the beta testers who builds a successful coil using the beta kit producing output arcs exceeding 48" will receive $500.00 USD.
So if every beta tester gets 48" arcs or more, then every beta tester will get a check for $500.00.
Not really a challenge - this kit will easily do this - but rather an incentive so the beta testers will actually utilize the kit and not have the kit sit on a table somewhere can collect dust.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Nah wrote ...
Hello!
Just a question, when this is for sale on your website, what kind of price would it be?
Please tell me if you're not comfortable tell me this.
I can't mention any pricing yet, but for what you will be getting, it will be very reasonably priced.
Our goal is to be able to provide the user with everything they need to build a solid, reliably working Tesla coil. The final kit will have full schematics, full step-by-step instructions (as is similar with our other kits), boards with all components, an enclosure, IGBT, power supply, modulator, etc...
The universal DRSSTC kit will be part of our new flexiBrute series. And the flexiBrute series will be a complete modular system. You can buy one component, or buy them altogether. Just mix and match which modular components you want for your DRSSTC, and connect them together.
Once i get these beta kits finished, I will be sending my prototypes to the photo studio to get photos and then i'll share them with everyone. Hopefully by next week.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Okay, just some updates on the beta unit kits. The first kits going out are the SOT-227 IGBT based kits. The next batches will be the CM300 based kits. Nothing special about these boards - basically just rehashed versions of the miniBrute IGBT boards. Good for low-mid power use.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Just a few more odd and ends shots of the Universal Driver (Single 30A Channel Drive Output) with Fiber Optic and BNC Input and the CM300 IGBT Board.
The CM300 IGBT board is a mid-power half-bridge board with onboard voltage-doubler (for simple 120VAC operation) and is built on a 0.120" thick PCB board with 8 oz. copper traces.
Special thanks to Mike for the super duper quick turn on the prototype front panel laser cutting!
Registered Member #2808
Joined: Sat Apr 17 2010, 03:25AM
Location: Hong Kong
Posts: 11
EastVoltResearch wrote ...
Okay, just some updates on the beta unit kits. The first kits going out are the SOT-227 IGBT based kits. The next batches will be the CM300 based kits. Nothing special about these boards - basically just rehashed versions of the miniBrute IGBT boards. Good for low-mid power use.
EVR, are those yellow color film caps are protection caps? It seems like they are connecting the +ve rail with the -ve rail via the bridge output, won't that act as a bypass for the current and short the bridge?
Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
Indeed, the capacitors do appear to be directly across the switches. Turn on losses, anyone?
The capacitors' midpoint shouldn't be connected to that terminal; they should be connected to separate Output terminal, assuming they form the voltage divider for the half bridge. Though I would think a DRSSTC would need more than 4.7uF for that purpose.
My guess is that they are just meant for snubbing out the voltage spikes across the bridge and that midpoint shouldn't be connected to anything, and that the main supply decoupling will form the voltage divider for the other output.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Great catch guys! That is indeed a mistake. The decoupling capacitor by itself should be across the DC rail and not tied to output.
We were experimenting with some RC snubbers circuits, which indeed connect like that shown in the photos, so thats probably what i was thinking when i set up this photo session. However, the RC snubber design is really dependent upon the load, etc..., and its not something easy an end user can select properly without empirical measurement, so we just decided to keep with the standard decoupling capacitor.
Registered Member #2390
Joined: Sat Sept 26 2009, 02:04PM
Location: Milwaukee Wisconsin
Posts: 381
!amazed Looks great!!!! That enclosure design is pretty awesome!!!! The word cool comes to mind!! As always, excellent work Dan! I gotta get me wunna dose!!!!! Do let me know when you finish it up!
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BETA Testers Wanted - Universal DRSSTC Package
