(Analog) AC Current Transformer

Non-Invasive AC Current Telemetry: Built around an onboard micro precision current transformer to safely sample high AC currents without direct electrical contact with live conductors.

Onboard Amplification & Signal Conditioning: Features an integrated operational amplifier circuit that transforms the transformer's tiny induced AC current into a smooth analog voltage signal.

Onboard Sensitivity Trimmer Potentiometer: Equipped with a multi-turn trimmer to easily adjust output signal amplification and match your microcontroller ADC sampling range.

Dual Header Output Port: Includes both 3-pin headers and JST-style connector terminals for flexible solderless breadboarding or custom sensor wiring.

Broad AC Frequency Response: Optimized for 50Hz / 60Hz mains grid monitoring, making it ideal for home energy auditing and appliance load measurement.

Housing & Board Material: High-grade FR-4 glass-epoxy PCB with a blue onboard current transformer coil, blue potentiometer, and tinned header pins.

Technical Specifications:

Operating Supply Voltage: 3.3V - 5.0V DC (Op-Amp Power).

Input Signal Range: Up to 5A AC (50Hz / 60Hz).

Output Signal Type: Analog Voltage Waveform.

Color: Blue PCB with Blue Transformer Enclosure and Silver Pins.

Usage Advice: Pass the target AC live wire through the center aperture hole of the transformer coil; connect VCC (3.3V-5V) and GND, and route the analog output pin to an ADC input pin on your Arduino, ESP32, or Raspberry Pi.

Maintenance: Ensure wires are cleanly routed through the sensor aperture; keep PCB surfaces dry, dust-free, and away from corrosive chemicals.

Essential AC Load Telemetry Sensor: Position as a core current-sensing module for smart power strips, energy consumption loggers, AC over-current protection circuits, and industrial machinery monitors.

Highlight Safe Galvanic Isolation: Emphasize how non-contact current transformer coupling provides complete electrical isolation between high-voltage AC lines and sensitive low-voltage microcontrollers.

Recommended Cross-Sell Add-ons: Pair with 5A Single-Phase AC Current Sensor, AC Single Phase Voltage Transformer Sensor, SCT-013-000 Non-Invasive AC Current Clamp Sensor 100A 1V, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Current Sensor collection page as your standard analog AC current transformer breakout module.