Mini Spot Welder Quick Test method
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A fast method to test the correct functionality of your spot welder FETs and driver circuit.
Please keep in mind that you always need to change the driver resistor (R4) to 470 Ohms and add the inrush current limiter resistor in series with the diode and capacitor to avoid it failing for the Bk/Ca series versions.
Inrush current limiting resistor mod:
• Mini Spot Welder Bk11-1k BL18-2K CA04 Inru...
Driver resistor mod:
• New Mini Spot Welder Bl18-2k vs Bk11-1k
All mini Spot Welder comparisons:
• All "Mini Spot Welder" versions: circuit A...