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.
Current-to-Voltage Converter Circuit for Audio DACs
https://www.electronics-lab.com/project/current-to-voltage-converter-circuit-for-audio-dacs/
Many high-performance audio digital-to-analog converters (DACs) feature a current output that must be converted into a voltage output for use with audio amplifiers. In premium automotive audio applications, for example, it is critical that the DAC signal-to-noise ratio (SNR) and total harmonic distortion plus noise (THD+N) performance is not compromised by the current-to-voltage (I-V) output […]
Two Channel Current Sensor for High Voltage Range
https://www.electronics-lab.com/project/two-channel-current-sensor-for-high-voltage-range/
This board is built using a 2 x INA149 precision unity-gain difference amplifier with a very high input common-mode voltage range. The project can be used as a current sensor for high-voltage applications, INA149 provides a common-mode voltage range of +/-275V. The project operates with a wide supply range from +/-5V to +/-15V. The circuit […]
High Current/High Voltage OPAMP with Boost Output Current Greater Than 1A
https://www.electronics-lab.com/project/high-current-high-voltage-opamp-with-boost-output-current-greater-than-1a/
This project provides High Voltage and High Current output swing. The board is built using OPA454 OPAMP and 2 x high current NPN/PNP BJT Transistors. Output transistors Q1 and Q2 provide positive and negative output currents to the load. The project works with an input power supply up to +/-50V DC. OPAMP Vout swings from […]
PI Temperature Control Amplifier for Thermoelectric Cooler (TEC) Driver
https://www.electronics-lab.com/project/pi-temperature-control-amplifier-for-thermoelectric-cooler-tec-driver/
This is a simple Proportional, Integral (PI) temperature control amplifier. A complete thermoelectric cooler (TEC) controller can be created using this PI amplifier and OPA569 Power Op-Amp or other output amplifiers such as DRV591, DRV592 and DRV593. Proportional-integrator compensation is simpler to adjust and often provides an adequate thermal transient response to the TEC driver […]
Unipolar-to-Bipolar Level Translator 0V to 5V Unipolar to ±10V Bipolar Converter
https://www.electronics-lab.com/project/unipolar-to-bipolar-level-translator-0v-to-5v-unipolar-to-%c2%b110v-bipolar-converter/
This design is intended to translate a small unipolar signal to a wide bipolar signal. A common application is to translate a 0 to 5V DAC output to a ±10V bipolar signal. All resistors are 1% but it is advisable to select 0.1% 20 ppm/°C resistors for good gain, offset accuracy, and drift tolerance. A […]
High-Voltage (180V) – High-Current (30mA) Operational Amplifier Module
https://www.electronics-lab.com/project/high-voltage-180v-high-current-30ma-operational-amplifier-module/
This project provides a platform to evaluate the OPA462 high-voltage, high-current operational amplifier. Multiple component footprints allow the most common circuit configurations. The board accommodates high-voltage and high-current operational amplifier OPA462 from Texas Instruments. A High-Voltage Noninverting Amplifier, AV = 17 V/V. An example application circuit is given below. The board is capable of operating […]
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 […]
DC Electronic Load – 1A
https://www.electronics-lab.com/project/dc-electronic-load-1a/
This is a very precise Electronic Load project built using the ultra-Precision, Low-Noise OPAMP MAX44251 from Analog Devices. The project can sink current from a power source. It can be used as test gear for power supplies, chargers, solar panels, batteries, and DC-DC converters. The resistor R11 acts as a shunt, OPAMPs convert current into […]
Accurate Acoustic Sensor – Sound Frequency to Voltage Converter
https://www.electronics-lab.com/project/accurate-acoustic-sensor-sound-frequency-to-voltage-converter/
The project presented here is a sensitive sound sensor. The circuit converts sound frequency and outputs DC voltage. The board consists of LM358 OPAMP and LM2907 IC. LM358 is used as a dual-stage microphone preamplifier and LM2907 acts as a frequency to voltage converter. The circuit provides analog voltage output when it detects sound. The […]