Update schematics and PCB for reading of current by MCU

Budget 387$ per month

Posted: 4 year ago

Opened

Description: We have a simple schematics which reads output from current transformer by ADC (ADS1015). Output is currently read as differential output as it is AC and then after periodical reading RMS is calculated. This solution is slow and too hungrz for MCU resources. We need to modify reading in a way when output from MCU will be amplified by operational apmiplifier first, than go through rectifier bridge, capacitor so we will get stable DC signal which will represent value of current measured by CT transformer. Output needs to be 0-3.3V and we need to read it as single-ended to limit amount of ADC needed. Current schematics is in a copy. Design made in EasyEDA app. Current design is verified by demo production already.
In case of succefull cooperation, we expect to cooperate more in future.
Skills:
applications developer,design,software development

Source: peopleperhour.com