Weld Power Unit
AssemblyThe capacitor bank and discharge stage that stores energy and dumps it through the stud in a few milliseconds. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Weld Power Unit parts and their functions
8 top-level parts · 295 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Capacitor Bank 3 parts | 1× | Energy storage bank |
| 2 | Capacitor Charger 4 parts | 1× | Capacitor charger |
| 3 | Discharge Switch 4 parts | 1× | SCR discharge module |
| 4 | DC Bus Bar | 2× | DC bus bars |
| 5 | Bleed Resistor | 1× | Safety bleed resistor |
| 6 | Current Shunt | 1× | Weld current shunt |
| 7 | Boost Inverter Stage 5 parts | 1× | Boost inverter stage |
| 8 | Fastener Set | 1× | Bolts, nuts, and washers. |
3D model
No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).
Build & assembly graph
expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly
shared across products
atomic part
related product
Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.
Bill of materials for Weld Power Unit
8 top-level lines · 36 rows shown · 295 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Capacitor Bank 3 parts | stud-welding-machine-capacitor-bank | 1× | 1 | 30 | assembly |
| 1.1 | Electrolytic Capacitor | stud-welding-machine-electrolytic-cap | 24× | 24 | · | part |
| 1.2 | Capacitor Bracket | stud-welding-machine-cap-bracket | 4× | 4 | · | part |
| 1.3 | DC Bus Bar | stud-welding-machine-bus-bar | 2× | 2 | · | part |
| 2 | Capacitor Charger 4 parts | stud-welding-machine-charger | 1× | 1 | 83 | assembly |
| 2.1 | Charge Transformer | stud-welding-machine-charge-transformer | 1× | 1 | · | part |
| 2.2 | Charge Rectifier | stud-welding-machine-rectifier | 1× | 1 | · | part |
| 2.3 | Charge Control Board 5 parts | stud-welding-machine-charge-board | 1× | 1 | 80 | assembly |
| 2.3.1 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 2.3.2 | Microcontroller | mcu | 1× | 1 | · | part |
| 2.3.3 | SMD Passive (R/C/L) | smd-passives | 70× | 70 | · | part |
| 2.3.4 | Relay | relay | 2× | 2 | · | part |
| 2.3.5 | Connector | connector | 6× | 6 | · | part |
| 2.4 | Power Supply | power-supply | 1× | 1 | · | part |
| 3 | Discharge Switch 4 parts | stud-welding-machine-discharge-switch | 1× | 1 | 50 | assembly |
| 3.1 | Discharge Thyristor | stud-welding-machine-scr | 2× | 2 | · | part |
| 3.2 | Gate Trigger Board 3 parts | stud-welding-machine-gate-board | 1× | 1 | 45 | assembly |
| 3.2.1 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 3.2.2 | SMD Passive (R/C/L) | smd-passives | 40× | 40 | · | part |
| 3.2.3 | Connector | connector | 4× | 4 | · | part |
| 3.3 | Snubber Network | stud-welding-machine-snubber | 2× | 2 | · | part |
| 3.4 | Switch Heatsink | stud-welding-machine-heatsink | 1× | 1 | · | part |
| 4 | DC Bus Bar | stud-welding-machine-bus-bar | 2× | 2 | · | part |
| 5 | Bleed Resistor | stud-welding-machine-bleed-resistor | 1× | 1 | · | part |
| 6 | Current Shunt | stud-welding-machine-current-shunt | 1× | 1 | · | part |
| 7 | Boost Inverter Stage 5 parts | stud-welding-machine-inverter | 1× | 1 | 127 | assembly |
| 7.1 | Power IGBT | stud-welding-machine-igbt | 4× | 4 | · | part |
| 7.2 | Weld Transformer | stud-welding-machine-weld-transformer | 1× | 1 | · | part |
| 7.3 | Output Choke | stud-welding-machine-output-choke | 1× | 1 | · | part |
| 7.4 | Inverter Control Board 4 parts | stud-welding-machine-inverter-board | 1× | 1 | 120 | assembly |
| 7.4.1 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 7.4.2 | Microcontroller | mcu | 1× | 1 | · | part |
| 7.4.3 | SMD Passive (R/C/L) | smd-passives | 110× | 110 | · | part |
| 7.4.4 | Connector | connector | 8× | 8 | · | part |
| 7.5 | Switch Heatsink | stud-welding-machine-heatsink | 1× | 1 | · | part |
| 8 | Fastener Set | fastener-set | 1× | 1 | · | part |
Something wrong in this list? Report a problem with this BOM.
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇨🇳Foxconn
foxconn.com ↗
|
Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |