AC220-9V Transformer For NY-D01 100A/40A Spot Welding Controller Board

Dedicated Controller Board Power Source: Purpose-built power transformer designed specifically to supply stable 9V AC operating power to NY-D01 (100A / 40A) spot welding controller boards.

Mains AC 220V Input Step-Down: Converts standard 220V AC mains electricity into a low-voltage 9V AC output, providing reliable power to onboard microcontrollers and zero-crossing detection circuits.

Precise Phase Synchronisation: Delivers pure AC waveform output necessary for accurate zero-crossing detection, ensuring precise SCR/Triac timing and reliable spot weld pulse control.

Robust Red & Yellow Wire Leads: Pre-wired color-coded flexible lead wires (Red for AC 220V input, Yellow for AC 9V output) allow quick and error-free terminal block connection.

Compact Mountable Frame: Low-profile EI-core transformer design with integrated side mounting tabs for secure installation inside spot welder enclosures.

Core & Construction Style: High-permeability silicon steel EI laminated core with copper wire windings and insulating protective tape.

Contact & Connection Style: Pre-stripped insulated wire lead connections (Red: Primary 220V AC; Yellow: Secondary 9V AC).

Technical Specifications:

Model Compatibility: NY-D01 100A / 40A Spot Welding Control Boards.

Input Voltage: AC 220V (50/60Hz).

Output Voltage: AC 9V.

Power Rating: Standard auxiliary logic supply rating (~3W –5W).

Mounting: Dual-side screw mounting chassis tabs.

Color: Silver metallic core with red/blue coil wrapping and red/yellow lead wires.

Usage Advice: Connect red lead wires directly to mains AC 220V input and yellow lead wires to the dedicated 9V AC input screw terminals of the NY-D01 control board.

Maintenance: Ensure the transformer is firmly secured inside the chassis to avoid vibration noise during welding pulses. Keep free of metallic filings and welding debris.

Essential NY-D01 Controller Component: Position as the indispensable power supply transformer for DIY battery spot welder builds (18650/21700 pack assembly) using NY-D01 control boards and microwave oven transformers (MOT).

Highlight Pure AC Output & Zero-Cross Timing: Emphasize that DC adapters cannot replace this transformer, as the NY-D01 controller requires a true 9V AC waveform to trigger zero-crossing detection for consistent weld pulse timing.

Recommended Cross-Sell Add-ons: Pair with E41X20/5W Power transformer 12v-0-12v, AC to DC 1N4007 full bridge rectifier module, TDGC Meter Display Variac 0-250V Single Phase 2KVA AC Regulator, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your AC to DC Transformers collection page as your core spot welder controller transformer.