Temperature Meter circuit
The LM35 temperature sensor is a versatile and widely used device in electronic temperature measurement applications. It provides an accurate representation of temperature in the form of an analog voltage output. The linear relationship between temperature and output voltage allows for straightforward interfacing with analog-to-digital converters (ADCs) or microcontrollers.
The LM35 operates within a temperature range of -55°C to +150°C, making it suitable for various applications, from environmental monitoring to industrial temperature control. The sensor requires a power supply voltage typically ranging from 4V to 30V, providing flexibility in design.
In a typical circuit configuration, the LM35 is connected with its V+ pin to a positive voltage supply, the V- pin to ground, and the output pin connected to the measurement system or ADC. The output voltage can be read directly in degrees Celsius, as it is calibrated to produce 10 mV for each degree of temperature. For example, at 25°C, the output voltage would be 250 mV.
To enhance the accuracy of temperature readings, it is advisable to include bypass capacitors near the power supply pins of the LM35. This helps to filter out any noise that could affect the sensor's performance. Additionally, the output can be amplified using an operational amplifier (op-amp) if a higher voltage output is required for interfacing with other components in the circuit.
Overall, the LM35 sensor is an excellent choice for precision temperature measurement applications, providing reliable and linear output for easy integration into various electronic systems.This temperature meter uses the precision micro power centigrade sensor IC LM35. The output voltage of the IC is linearly equal to 10Mv per degree centigr. 🔗 External reference
Related Circuits
The ADC0809 is an 8-channel analog switch integrated with an 8-bit successive approximation analog-to-digital (A/D) converter. It supports the selection of eight input channels through address latch and encoder channel selection signals ADDA, ADDB, and ADDC. The address latch...
The ceiling fan speed control circuit depicted in Figure 3-6 utilizes a capacitor step-down method and a three-terminal fixed 7806 voltage regulator. It achieves fan speed control through the integrated circuit A2, which regulates the conduction angle of the...
The document presents two types of digital display circuits. The first type (a) utilizes a common anode circuit configuration, while the second type (b) employs a common cathode circuit structure. The common anode display circuit configuration consists of multiple light-emitting...
This circuit is effective for lamp and heater loads. Some circuits driving reactive loads require integral cycling and zero-voltage switching when an identical number of positive and negative half-cycles of voltage are applied to the load during a power...
The transmitter (FZ) winding and receiver (SZ) correspond to the three-phase windings connected to a 110V AC voltage supply for transmission. The field winding, early start angle, and receiver output voltage at both ends of the stator windings reflect...
This infrared alarm barrier is designed to detect individuals passing through doorways, corridors, and small gates. The transmitter emits an invisible beam of infrared light. When this beam is interrupted by a person, a buzzer connected to the receiver...