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Comimark Microvolt Millivolt Amplifier Adjustable Review

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Average

Revainrating 3 out of 5  
Rating 
3.0
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Description of Comimark Microvolt Millivolt Amplifier Adjustable

This voltage signal amplifier module is designed for microvolt /millivolt signal amplification with 1.5-1000 gain range. It is equipped with AD620 instrumentation amplifier chip and support null point adjustment, negative voltage output and noise filtering capabilities ensure you can get the low distortion but high frequency signal Perfect for small signal amplification. Input Voltage: DC 3-12V. Package Included: 1X AD620 Microvolt Millivolt DC Voltage Amplifier Module (If the number of products received is incorrect, please contact us . we will refund or give you a replacement). We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution.

Reviews

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Type of review

Revainrating 3 out of 5

Inappropriate gain control for some applications

This module has advantages over the AD620 equivalent implementation layout but is unsuitable for the very weak signals produced by load cell to load cell without modification. The gain potentiometer is 100kΩ, but load cells need a gain on the order of 500-1000 to provide a signal suitable for the ADC, and this requires a gain resistor of less than 100Ω for the AD620 chip. You cannot set the 100K potentiometer to these values. With some effort I managed to remove the 100kΩ gain potentiometer and

Pros
  • Amplifier
Cons
  • Only available in black