ماژول NRF24L01 با برد 1.8 کیلومتری
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This is a breakout board for the fully integrated linear ACS712 current sensor. The sensor gives precise current measurements for both AC and DC signals. Thick copper conductor and signal traces allow for the survival of the device up to 5 times overcurrent conditions. The ACS712 outputs an analog voltage output signal that varies linearly with sensed current. Current Sensor detects the current in a wire or conductor and generates a signal proportional to the detected current either in the form of analog voltage or digital output.
A current-carrying conductor also gives rise to a magnetic field in its surroundings. In Indirect Sensing, the current is measured by calculating this magnetic field by applying either Faraday’s law or Ampere Law. Here either a Transformer or Hall effect sensor or fiberoptics current sensor is used to sense the magnetic field.
The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field that is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging. ACS712 can be used in applications requiring electrical isolation as the terminals of the conduction path are electrically isolated from the IC leads. Thus, this IC doesn’t require any other isolation techniques. This IC requires a supply voltage of 5V. Its output voltage is proportional to AC or DC current. ACS712 has a nearly zero magnetic hysteresis.
This IC can detect both AC and DC current so, it has a wide range of applications. ACS712 is used in Peak detection circuits, circuits to increase gain, rectification application for AtoD converters, Overcurrent fault latch, etc…The filter pin provided by this IC is used to eliminate the attenuation effect in resistor divider circuits.
ACS712 is used in many industrial, commercial and communication applications. This IC is applicable for Automobile applications. Some of the typical applications of this IC can be found in motor control circuits, for load detection and management, SMPS, overcurrent fault protection circuits.