Tag: OPAMP
![Microphone Preamplifier – Sound Sensor Microphone Preamplifier – Sound Sensor](https://www.electronics-lab.com/wp-content/uploads/2021/07/002-1024x685.jpg)
Microphone Preamplifier – Sound Sensor
This is an easy to construct dual-stage microphone pre-amplifier. The project can be used as a sound sensor or microphone pre-amplifier. The 1st op-amp pre-amplify the very low-level signal coming from the condenser microphone and 2nd op-amp provides more boost to the audio signal....
Continue Reading![4 Channel Analog Video Distribution Amplifier 4 Channel Analog Video Distribution Amplifier](https://www.electronics-lab.com/wp-content/uploads/2021/02/002-3-1024x976.jpg)
4 Channel Analog Video Distribution Amplifier
The project presented here is a low-cost video distribution amplifier capable of driving up to four video lines. The amplifier is configured with a non-inverting gain of 2. The input video source is terminated in 75 Ohms and is applied to the high impedance non-inverting input. Each...
Continue Reading![1.2V-25V/10A Adjustable Power Supply Using Power Op-Amp 1.2V-25V/10A Adjustable Power Supply Using Power Op-Amp](https://www.electronics-lab.com/wp-content/uploads/2018/01/003.jpg)
1.2V-25V/10A Adjustable Power Supply Using Power Op-Amp
This is a small size power supply based on OPA549 power op-amp that provides output voltage 1.2V to 25V with 0 to 10A adjustable current limit. Two onboard trimmer potentiometers provided to adjust the voltage and current, LED D1 is over temperature indicator. The circuit works with...
Continue Reading![Tiny Professional Microphone Preamplifier Tiny Professional Microphone Preamplifier](https://www.electronics-lab.com/wp-content/uploads/2017/01/MICROPHONE-PREAMPLIFIER-PIC1.jpg)
Tiny Professional Microphone Preamplifier
This board has been designed around INA217 low distortion, low noise instrumentation amplifier. The INA217 is ideal for low-level audio signals such as balanced low-impedance microphones. Many industrial, instrumentation, and medical applications also benefit from its low noise and...
Continue Reading![Low noise Mini Electret Microphone PreAmplifier Low noise Mini Electret Microphone PreAmplifier](https://www.electronics-lab.com/wp-content/uploads/2016/09/IMG_5973.jpg)
Low noise Mini Electret Microphone PreAmplifier
This single supply microphone pre-amplifier amplifies the output signal of an electret capsule microphone to audio line levels. An op-amp is used as a trans-impedance amplifier to convert the output current from the microphone into a signal-level voltage. The circuit works with 9V so...
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