Spot Welder

  1. My testing showed that this unit will not operate on lithium batteries with BMS controllers. I tested useing a 100 Amphour battery and it triped the BMS and switched off the Battery pulse is accurate to ensure the welding quality.

  2. The welding pen are screw connected and will eveltually require replacement.
  3. The unit operated in two modes, automatic touch welding mode, and manual trigger interface.
  4. The power board uses 2 Gusi copper to increase the overcurrent capacity.
  5. built with five 300A matched 4N04RX MOSFETS.
  6. The MOS tube driver adopts the imported special chip driver. The MOSFETS can surstain high current of a Maximinium of 20nS, so fast switching is employed to prevent the destruction of the MOSFETS and the non-triode push-pull drive.
  7. The MOS drive design adds a transient diode to protect the MOSFETS.
  8. 10AWG multi-filament flexible wire is used for the welding pe0n line and the input line to increase the overcurrent capacity.
  9. The controller is designed to weld nickel-plated steel strips from 0.1mm to 0.12mm.
  10. A 25Volt 10000uF high-frequency low-resistance capacitor is added to the power input for energy compensation and to increases welding stability. There is a power switch under the control board. After pressing, wait for 3 seconds. After the buzzer drops, the LCD lights up and the boot is complete. Press the power switch again to shut down. 3: Screen description and parameter adjustment. 4: Welding Keep the welding pin clean. If the welding pin is polished into a round head, the welding effect can be improved. Note: Battery selection 1: 12V car battery from 25 to 40ah, requires good performance and low internal resistance 2: 4000 to 6000mAh 45C to 60C 3S model aircraft lithium battery 3: 30 to 35ah 12V capacity lithium battery pack Welding materials Energy setting Energy must gradually increase from 01, and the maximum cannot exceed 50 Exceeding the above conditions may damage the controller

    Glenn Lyons VK4PK
    Ver:gnl2021 - pre published v0.9