Tag: OPAMP
![PI Temperature Control Amplifier for Thermoelectric Cooler (TEC) Driver PI Temperature Control Amplifier for Thermoelectric Cooler (TEC) Driver](https://www.electronics-lab.com/wp-content/uploads/2024/05/006-10-1024x551.jpg)
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...
Continue Reading![Unipolar-to-Bipolar Level Translator 0V to 5V Unipolar to ±10V Bipolar Converter Unipolar-to-Bipolar Level Translator 0V to 5V Unipolar to ±10V Bipolar Converter](https://www.electronics-lab.com/wp-content/uploads/2024/05/002-9-1024x683.jpg)
Unipolar-to-Bipolar Level Translator 0V to 5V Unipolar to ±10V 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...
Continue Reading![High-Voltage (180V) – High-Current (30mA) Operational Amplifier Module High-Voltage (180V) – High-Current (30mA) Operational Amplifier Module](https://www.electronics-lab.com/wp-content/uploads/2024/05/009-5-1024x797.jpg)
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...
Continue Reading![Photo Diode Amplifier Photo Diode Amplifier](https://www.electronics-lab.com/wp-content/uploads/2024/01/003-5-1024x651.jpg)
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...
Continue Reading![DC Electronic Load – 1A DC Electronic Load – 1A](https://www.electronics-lab.com/wp-content/uploads/2023/08/001-1024x614.jpg)
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...
Continue Reading![Accurate Acoustic Sensor – Sound Frequency to Voltage Converter Accurate Acoustic Sensor – Sound Frequency to Voltage Converter](https://www.electronics-lab.com/wp-content/uploads/2022/07/001-4-1024x527.jpg)
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...
Continue Reading![Cooling Fan Controller Using Temperature Sensor LM35 Cooling Fan Controller Using Temperature Sensor LM35](https://www.electronics-lab.com/wp-content/uploads/2022/06/004-1024x634.jpg)
Cooling Fan Controller Using Temperature Sensor LM35
The project presented here is a low-cost solution for heat management of the heatsink and various equipment that requires automatic control of a cooling Fan. The project is built using a very cheap LM358 OPAMP. LM358 is used as a comparator, and a trimmer PR1 is provided to set the...
Continue Reading![Piezo Element Amplifier for Guitar and Violin Piezo Element Amplifier for Guitar and Violin](https://www.electronics-lab.com/wp-content/uploads/2022/04/BOM-3-1024x391.jpg)
Piezo Element Amplifier for Guitar and Violin
The board presented here is a preamplifier for contact microphones that are used for amplifying the sound of musical instruments which do not contain electrical pickups, such as guitar and violins. Most contact microphones use a piezo element to convert vibration in the body of the...
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