Half-Bridge with Ultra-Precise Current Sense Feedback for Solenoid
https://www.electronics-lab.com/project/half-bridge-with-ultra-precise-current-sense-feedback-for-solenoid/
A Half-bridge converter is widely used in applications such as DC-DC converters, switch mode power supplies, inverters, motor drivers, resistive loads, and solenoid drivers. This project consists of an IR2104 Half-bridge driver chip, 2 x DPAK MOSFETS, and an INA293 precision current sense amplifier. The IR2104 is a half-bridge, high voltage, high-speed power MOSFET and […]
Xenon Flash Tube Driver
https://www.electronics-lab.com/project/xenon-flash-tube-driver/
This is a Xenon Flash tube driver board and consists of a high voltage AC to DC converter circuit, a DC storage capacitor, a trigger circuit that will fire the xenon lamp, an Optocoupler to control the flashes etc. The circuit requires 220VAC and trigger pulse which should be between 3V to 5V. The input […]
Voltage Attenuator
https://www.electronics-lab.com/project/voltage-attenuator/
The project shown here converts bipolar +/-10V (Dual 10V) signal and provides a single-ended 0 to 5V signal. The circuit attenuates a +/-10V, 10Khz bandwidth bipolar signal converts to a single-ended signal, and also filters it by a 3rd-order Butterworth filter to drive a single-ended analog-to-digital converter (ADC). The project was built using OPA2206 OPAMP […]
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 […]
Airflow Sensor
https://www.electronics-lab.com/project/airflow-sensor/
This airflow sensor consists of INA326 precision instrument amplifier, double 100uA REF200 current sources, and a REF3025 2.5V reference voltage chip. Airflow dynamics dictate how much the voltage will increase or decrease for a given airflow rate. Therefore, the relationship between temperature and flow rate would have to be established for a method such as […]
Adjustable Current Source – 0 to 1A
https://www.electronics-lab.com/project/adjustable-current-source-0-to-1a/
This voltage-to-current (V-I) converter delivers a well-regulated current to a load. The circuit accepts an adjustable input voltage from Trimmer potentiometer PR1 and converts it to an output current from 0A to 1A. The current is regulated by feeding the voltage across a low-side, current-sense resistor R9 back to the OPAMP. The output Darlington […]
16-Bit I/O Expander with Serial Interface (SPI or I2C)
https://www.electronics-lab.com/project/16-bit-i-o-expander-with-serial-interface-spi-or-i2c/
This project provides 16-bit, general-purpose parallel I/O expansion for I2C or SPI bus applications. The MCP23017 chip supports the I2C interface and the MCP23S17 chip is used for the SPI interface. The board can be populated with either SPI or I2C chip. Follow the connection diagrams for interface details. Arduino Library for MCP23017 I2C Chip […]
2 Channel Ultra-Precise Current Sensor
https://www.electronics-lab.com/project/2-channel-ultra-precise-current-sensor/
The project described here is a two-channel ultra-precise, current-sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 120 V. The INA2290A1 chip is the heart of the project. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of […]
0-1A Single-Supply, Low-Side, Current Sensor with Output 0 to 4.9V
https://www.electronics-lab.com/project/0-1a-single-supply-low-side-current-sensor-output-0-to-4-9v/
This single-supply, low-side, current sensing solution accurately detects load current between 0 and 1A. The current sensor measures 0 to 1A across the shunt resistor, providing 0 to 4.9V output. The OPA320 features wide bandwidth and low offset voltage making it an excellent amplifier for this design. With a single 5V supply, the LM7705 negative […]
InfiRay Xinfrared T2S Plus Thermal Camera Review – A Smartphone Thermal Camera on a Tiny Package
https://www.electronics-lab.com/infiray-xinfrared-t2s-plus-thermal-camera-review-a-smartphone-thermal-camera-on-a-tiny-package/
Introduction For anyone with a knack for DIY projects, precision maintenance, or professional inspections, a thermal camera has become an invaluable addition to their tool collection. Looking back just a few years, they were very expensive and could only be found in military equipment. Lately, they’ve become a lot cheaper, and the InfiRay Xinfrared T2S […]