Load Cell Amplifier HX711 for Weigh Scale and Strain Gauge Sensor
https://www.electronics-lab.com/project/load-cell-amplifier-hx711-for-weigh-scale-and-strain-gauge-sensor/
This load cell amplifier uses the HX711 24-bit ADC for weigh scales and control. It directly interfaces with bridge sensors using a PGA (gains of 32, 64, or 128) and includes an on-chip regulator/oscillator, simplifying its use.
INA122 Single Supply Micropower Instrumentation Amplifier Module
https://www.electronics-lab.com/project/ina122-single-supply-micropower-instrumentation-amplifier-module/
This low-noise INA122 precision instrumentation amp is ideal for portable data acquisition. It supports single-supply (2.2V to 12V), features an on-board 2.5V reference, adjustable gain (10-10000), and is adaptable for strain gauge/pressure sensors.
Ultra Precision Zero Drift Current Sensor – Range Up To 12A
https://www.electronics-lab.com/project/ultra-precision-zero-drift-current-sensor-range-up-to-12a/
This LTC6102-based Ultra Precision Zero Drift High-Side Current-Sense Amplifier measures load current by amplifying the voltage drop across an on-board resistor. It offers precise, proportional unipolar output (200mV/A nominal), operates on 4V to 60V supplies, and eliminates ground-loop errors.
Dual-Channel, 0V to 76V Current-Sense Amplifier
https://www.electronics-lab.com/project/dual-channel-0v-to-76v-current-sense-amplifier/
This is a dual-channel current sense amplifier that utilizes the MAX40201F, a high-precision, high-voltage current-sense amplifier. This circuit measures the current flowing through a shunt resistors and provides a voltage output proportional to that current. The MAX40201F is available in various gain configurations; this project employs the MAX40201F with a gain (G) of […]
Stereo 2-Vrms Line Driver and Headphone Amplifier
https://www.electronics-lab.com/project/stereo-2-vrms-line-driver-and-headphone-amplifier/
This is a 2Vrms Pop-Free stereo line driver with a stereo headphone driver designed to allow the removal of the output DC-blocking capacitors for reduced component count and cost. The project is based on the DRV604 chip which is ideal for single supply electronics where size and cost are critical design parameters. The project is […]
Voltage Controlled Amplifier – VCA
https://www.electronics-lab.com/project/voltage-controlled-amplifier-vca/
The project presented here is a Voltage Controlled Amplifier (VCA). A VCA board helps users control the Audio Level from a remote potentiometer. It requires a single-ended audio signal in the input. Gain control voltage can be adjusted through an on-board potentiometer or use an external potentiometer connected to CN4. The project works with a […]
Precision Switched Integrator Transimpedance Amplifier
https://www.electronics-lab.com/project/precision-switched-integrator-transimpedance-amplifier/
This project is based on IVC102 chip from Texas Instruments. This chip is a precision integrating amplifier with FET OPAMP, integrating capacitors, and low leakage FET switches. It integrates low-level input current for a user-determined period, storing the resulting voltage on the integrating capacitor. The output voltage can be held for accurate measurement. The IVC102 […]
Photo Diode Amplifier
https://www.electronics-lab.com/project/photo-diode-amplifier/
This small module is a photodiode amplifier. The circuit consists of an OPAMP configured as a transimpedance amplifier for amplifying the light-dependent current of the photodiode. A small bias voltage is derived from the positive supply and applied to the op amp’s non-inverting input. This prevents the output from saturating at the negative supply rail […]
Hi-Efficient 20W Mono Class-D Audio Amplifier
https://www.electronics-lab.com/project/hi-efficient-20w-mono-class-d-audio-amplifier/
This is a Hi-Efficient 20W mono Class-D audio amplifier, designed to drive speakers as low as 4 ohms in a bridge-tied-load configuration. Due to the low power dissipation and high efficiency of up to 90%, the module doesn’t require a heatsink. The project is built using PAM8320 chip which features short circuit protection, thermal shutdown, […]
4 Channel Current Sense Amplifier – Low and High-Side Voltage Output
https://www.electronics-lab.com/project/4-channel-current-sense-amplifier-low-and-high-side-voltage-output/
This 4-Channel current sense amplifier is designed for cost-optimized applications. This is a current-sense amplifier (also called a current-shunt monitor) that senses the voltage drop across current-sense resistors at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The project was built using INA4180 chip which integrates a matched resistor gain […]