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Registered Member #46164
Joined: Wed May 07 2014, 08:16AM
Location: California, USA
Posts: 89
Hydron wrote ...
Once you learn to work with SMD you'll never look back! (OK, 0402 and smaller gets painful, but anything larger is _FASTER_ to solder than through hole, no pissing about bending leads and clipping them to length). Even the leadless stuff isn't normally a big deal if you have hot air and some sort of magnification.
Poor eyesight or motor skills can make it a real pain though. I would definitely recommend good magnification if you can afford it.
Registered Member #3215
Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
soldering SMD is easy... put a blob on one pad, let it solidify, place SMD part against it and maintain with your pick tool or whatever, melt the blob so it sticks to the part, let it solidify again and solder the other pad(s)
if it is an IC, solder the first pin like that and carefully adjust position when melting solder again if it is not well positioned
that way you could solder SMD with a nail and a lighter ;)
It's been a while but I finally had the chance to get working on this again, so I thought I'd post a quick update for people who might be interested. TL;DR - first (tiny) light has been achieved with the SiC on the bench with low bus voltages, so this officially makes sparks! Whether it works out as hoped in the end or turns out to be a massive fail, we'll find out as we go along!
After designing the boards I had them fabricated. Next I soldered up the main boards and the controller. So far the boards look *ok* and I only had a very few bugs to fix, but for the most part, they turned out to be working with no major errors in layout :).
Next was getting the firmware for the controller dialed in and to start basic bench testing. Main functionality seems to be working. For the initial test, I hooked it up to my QCW 2 resonator which has an operating frequency of around ~365kHz, to see if all aspects of the board are at least working as intended.
After basic verification I applied power to the bridge and had the coil running on its own feedback.. it works! The coil started making small sparks with a bench power supply as the bus supply at ~20-30V. Next step would be to finish up the actual resonators for this small coil, and start pushing the frequencies and power up, and hope the FETs don't get too unhappy...
Registered Member #61428
Joined: Sat Jan 14 2017, 12:39PM
Location:
Posts: 50
You know how sometimes people will ask you "Where do you see yourself in the next 5 years?" ? Well, I'm actually more interested in where this project went in the LAST 5 years. Last post is such a cliffhanger.
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SiC Tesla Coil
