What are Voltage Sensors?
Voltage sensors are the modules that are employed to estimate and monitor the amount of voltage of the device or system. Hence, these Voltage sensors can measure AC and DC voltage levels. The input of this sensor is the voltage, while the output can be an analog voltage signal, an audible signal, or a current.
B25 Voltage Sensor
B25 is the simple voltage Detection Sensor Module that uses a potential divider that helps to decrease any input voltage by a factor of 5. B25 Moreover; the sensor is of low cost. They based it on the principle of resistive voltage divider design that includes the resistor that functions as a sensing element. To make the circuit of the voltage divider, It separates the voltage into two resistors like a reference voltage & variable resistor. We apply a voltage supply to this circuit. The resistance used in the circuit decides the output voltage.
Features and Specifications of B25
Features
- Needs no external components
- Easy to use with Microcontrollers
- Small, cheap and easily available
Specifications
- Input Voltage: 0 to 25V
- Voltage Detection Range: 0.02445 to 25
- Analog Voltage Resolution: 0.00489V
- Dimensions: 4 × 3 × 2 cm
Pinouts
| Pin Name | Description |
| VCC | The positive terminal of the external voltage source range from 0 to 25V |
| GND | The negative terminal of the External voltage source |
| S | Analog pin needs to be connected to Analog pin of the microcontroller |
| + | Not Connected |
| – | Ground Pin needs to be connected to the GND of the microcontroller |
Interfacing B25 Sensor with Microcontroller
Interfacing a B25 voltage sensor with a microcontroller like Arduino is simple and easy. You need to connect the VCC and GND of the supply voltage to the screw terminals of the voltage sensor. Connect the – and S Pins of the voltage sensor to the ground and analog pin of your microcontroller, respectively.
Applications of B25 Voltage Sensor
Detection of Power failure
The power failure system enables a person to get signal alerts when the major power goes out. Therefore, requires a voltage sensor.
Voltage Monitoring
They provide constant voltage monitoring and provide the data that can show a problem. Low voltage can cause signal a potential issue, while the higher voltage is dangerous for devices and the environment. So, the voltage sensor helps when thresholds get decreased or exceeds and hence sends the warnings.
