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ZMCT103C 5A Current Sensor Module for Arduino – AC Active Output
₨ 1,000
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ZMCT103C 5A Range Single Phase AC Active Output Onboard Precision Micro Current Transformer Module Current Sensor For Arduino
The module is equipped with the ZMCT103C series of small high-precision current transformers and high-precision op amp circuits for accurate sampling and proper compensation of signals. It is convenient for signal acquisition of AC power within 5A. The corresponding output analog AC signal can be adjusted. The required output voltage can be adjusted according to the potentiometer (adjusting the amplification ratio, the amplification range is 0-100 times), but the maximum voltage at the output (OUT) will not exceed 1/2 VCC.
Key Specifications
- Rated Input Current: 0–5A (linear up to 10A)
- Rated Output Current: 5mA at 5A input
- Turns Ratio / Change Ratio: 1000:1
- Module Supply Voltage: 5V to 30V DC (for onboard op-amp versions)
- Isolation Withstand Voltage: 3000V (high galvanic safety for live AC lines)
- Accuracy / Linearity: 0.2% linearity class
- Operating Temperature: -40°C to +70°C
How It Works with Arduino
- Current Transformation: The primary winding carries the AC mains current, inducing a proportional scaled-down current (1000:1 ratio) on the secondary side.
- Onboard Circuitry: Most breakout modules include an operational amplifier (op-amp) and an adjustable potentiometer to scale the output analog voltage signal.
- Signal Reading & Calculation: Most users on Arduino Forum agree that the standard measurement routine involves reading the analog pin, tracking the peak sine wave value, calculating the RMS value (Peak × 0.707), and multiplying by a calibrated scaling factor.
If you'd like, I can provide:
- A wiring diagram / pinout guide for connecting it to an Arduino
- A sample Arduino code to calculate AC RMS current
- Help with choosing the right burden resistor if you have a bare transformer instead of a module
Features:
- ZMCT103C parameters
- Rated input current: 5A
- Rated output current: 5mA
- Change ratio: 1000:1
- Phase difference: less than or equal to 20' (100Ω)
- Linear range: 0-10A (100Ω)
- Linearity: 0.2%
- Precision level: 0.2
- Isolation withstand voltage: 3000V
- Working temperature: -40 ° C ~ 70 ° C
- Sealing material: epoxy resin
- Module supply voltage: 5-30V DC
Package Include:
- 1 x ZMCT103C 5A Range Single Phase AC Active Output Current Transformer Module
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