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Analog circuits have a range of voltages, rather than just two as in digital logic.

0 votes
1 answer
387 views

dividing voltage of shunt Vref Lm4040

the whole thing i'm trying to do for about 3 mounth's is measuring IR-level with high accuracy, i tried many newbie circuits with huge noises, unstable results etc.. then i focused on ADS1110, an ADC …
payam_sbr's user avatar
  • 117
0 votes
1 answer
463 views

A general purpose way to connect cellphone line out to a microcontroller ADC

I have looked at many questions with similar titles but cone cover my query. Question: How can I protect an STM32 Cortex M4 series ADC input when measuring the AUX output voltage from typical smartpho …
payam_sbr's user avatar
  • 117
0 votes
1 answer
179 views

transimpedance op-amp wrong and random output

from my previous question (this link) i advised to using operational amplifiers to converting current changes to voltage changes then i followed the standard circuit for a transimpedan …
payam_sbr's user avatar
  • 117