Hello everyone.
I am waiting to buy a KWeld spot welder. It has an incredible appearance!
Meanwhile I'm doing some capacitor testing with my Arduino Spot Welder.
I have purchased two Maxwell 58F units to build two different welders and power my Arduino Spot Welder, and I also hope to use them with my future Kweld !
At the moment I have not obtained any acceptable welding with Maxwell 58F. It seems that the capacitors do not have enough power.
I have charged the capacitors with a small CC CV power supply (12V, 5A).
I have connected the Arduino Spot Welder directly to the capacitors to perform the tests. The set works, but the welds are very loose, the solders hardly leave a mark on the nickel.
The arduino spot welder is working perfectly with a car lead battery.
Of course I have checked that the capacitors have reached their working voltage, 12.15v. I do not understand why even the first weld is not acceptable.
I just made some tests with the same configuration but with 5 car audio capacitors, they are Chinese and of poor quality. In theory it is assumed that 2 parallel capacitors are 1 farad.
With the Chinese capacitors, the Arduino Spot Welder works very well!
I can not understand why the Maxwell capacitors do not work! I bought them on Mouser and they are not cheap! Can the capacitors be defective?
I have tried both units and the result is just as bad.
Do they need more than 12V to work properly? I can not think of anything else.
I would greatly appreciate any ideas or advice.
Happy New Year !