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By Jackson Taylor

AC / DC 5A Current Sensing Module ACS712

  • The current sensor chips: ACS712ELC-5A
  • Pin 5V power supply, on-board power indicator
  • The module can be measured plus or minus 20 amps, corresponding to the analog output of 100 mV / A;
  •    There is no the detection current through, the output voltage is VCC / 2;
  •    PCB board size: 31 (mm) x13 (mm);

PRICE— 175
AC / DC 20A Current Sensing Module ACS712

PRICE— 175
5A CT Current Transformer – AC Current Sensor

current transformer is used for measurement of alternating electric currents. When current in a circuit is too high to apply directly to measuring instruments, a current transformer produces a reduced current accurately proportional to the current in the circuit, which can be conveniently connected to measuring and recording instruments. A current transformer isolates the measuring instruments from what may be very high voltage in the monitored circuit. Current transformers are commonly used in metering and protective relays in the electrical power industry.
Here current sensor is basically an transformer which gives voltage proportional to the current flowing.  a current transformer has a primary winding, a magnetic core and a secondary winding. The alternating current in the primary produces an alternating magnetic field in the core, which then induces an alternating current in the secondary winding circuit. An essential objective of current transformer design is to ensure the primary and secondary circuits are efficiently coupled, so the secondary current is linearly proportional to the primary current.

  • maximum current -5A
  • AC 50 60Hz operation only
  • winding ration 1:1200