Jymc220bi Schematic Full [verified] Jun 2026

| Pin | Name | Description | Typical Voltage | |-----|------|-------------|-----------------| | | VIN | Input voltage (4.5 – 38 V) | – | | 2 | GND | Ground (common) | 0 V | | 3 | SW | Switching node (connects to the internal MOSFET) | Pulses between VIN and GND | | 4 | FB | Feedback (fixed internally for 5 V/12 V; external for adjustable) | ≈ 0.6 V (reference) | | 5 | EN | Enable pin (active‑high). Pull high to turn on; pull low to shut down. | 0 V or 3.3 V | | 6 | SS | Soft‑start control (optional). Usually left unconnected; pulling low reduces inrush current. | – | | 7 | TEMP | Internal temperature sensor (not usually accessed). | – |

The JYMC-220B-I is a 230VAC, 12A DC brush motor speed controller commonly used in mini lathes like the CJ0618 and WM210V, featuring a design that regulates motors between 400W and 750W. The circuit includes onboard trimpots for adjusting acceleration (ACCEL), minimum/maximum speed, and IR compensation for load stability. Find detailed manuals at Manuals.plus Amazon.com jymc220bi schematic full

If you hear the relay click but the motor doesn't spin, check the brushes on the DC motor itself. Finding Documentation | Pin | Name | Description | Typical

The JYM-C220BI schematic represents a standard, robust industrial power supply design. It prioritizes reliability and cost-effectiveness using mature PWM technology (like the OB2269/CR6842 family). It is suitable for applications requiring stable dual-channel DC power with comprehensive protection features. Usually left unconnected; pulling low reduces inrush current