NY-D01 100A Spot Welder Control Board – Digital Time & Current Controller Module for DIY Transformer Welding

Overview

The NY-D01 100A Spot Welder Control Board is an industrial-grade digital controller designed for DIY resistance welding machines. It uses an onboard microcontroller to precisely regulate the welding time (cycles) and welding current (intensity) via a powerful 100A Silicon Controlled Rectifier (SCR). Equipped with a dual-digit red display, it gives you complete visual control over your pulse parameters, preventing weak welds or dangerous battery burn-throughs. It is the gold standard component for transforming a scrap microwave transformer into a professional battery pack production station.

Key Features

• Dual Parameter Digital Display: Two bright red digital displays show your exact time settings (1–50 cycles, 1 cycle = 20ms) and current settings (30%–99% power range).

• Heavy-Duty 100A SCR: Outfitted with a massive 100A thyristor to safely switch high-power AC transformer primaries.

• Optocoupler Isolation: Complete electrical isolation between the high-voltage AC circuit and the low-voltage control circuit ensures maximum user safety.

• Onboard Synchronization: Features precise zero-crossing detection to guarantee smooth SCR triggering, reducing electrical noise and transformer chatter.

• Industrial Adjustments: Uses two rugged, onboard potentiometers for rapid field adjustments without complex menu diving.

Technical Specifications

Wiring Warning & Setup Notes

1. AC Power Only: The board logic runs on a 9V to 12V AC power transformer (not a DC power adapter). A DC supply will power the LEDs but will not trigger the SCR because the timing relies on the AC sine wave zero-crossing.

2. Heat Dissipation: The 100A SCR must be mounted to a proper aluminum heatsink if you plan on doing rapid, high-frequency welding runs.