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Results tagged with operational-amplifier
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user 313457
Questions relating to the construction and applications of operational amplifiers, which are DC-coupled, high-gain electronic voltage amplifiers with a differential input and, usually, a single-ended output.
3
votes
1
answer
3k
views
Op-amp dual supply methods
To power an op-amp with a dual supply (+Vcc and -Vcc) you can use two power supplies connected in series.
I would like to find an alternative and less expensive way to do this as (in my project) the t …
- 73
1
vote
1
answer
329
views
Reduce or filter DC spike and noise
Goodmorning,
I have a small voltage drop (about 20-25 mV, DC) on a sense resistor (0.180 Ohm) and I need to amplify this with an op-amp to reach 2-3 V (DC). The signal is not clean and the noise, with …
- 73
0
votes
2
answers
1k
views
Peak detector circuit for AC RMS value
The peak detector circuit based on a precision rectifier with buffer allows to obtain the peak value.
The RMS value in an AC circuit is obtained from:
RMS = V peak / sqrt (2) = V peak * 0.7071
AC sou …
- 73