All Questions
Tagged with negative-feedback differential-amplifier
4 questions
3
votes
1
answer
174
views
How to break the feedback loop and add the loading?
I am trying to break the feedback loop of a fully differential amplifier and add the loading to the input and output:
I want to do this to take into account the loading of the feedback network on the ...
0
votes
3
answers
184
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Minimizing noise with single-ended opamps
Opamps often get used with one input at a DC voltage, usually the main ground per the standard inverting amplifier example:
For low noise, a BJT input stage like OPA1611's is often chosen for the ...
- 728
1
vote
3
answers
3k
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Understanding negative feedback in an inverting op-amp
Below is a basic inverting op amp. I'm having trouble seeing the negative feedback operation.
simulate this circuit – Schematic created using CircuitLab
If I understand the "golden rules" of ...
- 145
10
votes
2
answers
450
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Another Failed Differential Amplifier
This is the circuit I made - designed it, calculated it, built it:
simulate this circuit – Schematic created using CircuitLab
Q1's and Q2's collector current was 5mA, while Q3's was 1mA. Sine ...
- 2,452