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Results tagged with differential-amplifier
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user 321259
For questions about circuits that amplify the difference between two input signals but not the signal common to the two inputs (e.g. the long-tailed pair). Do not use for questions about operational amplifiers (which are a type of difference amplifier) unless the op amp is used as a differential amplifier -- use only the "operational-amplifier" tag for most questions about op amps (e.g. an op amp as an inverting amplifier).
4
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2
answers
127
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What is the difference between these differential amplifier circuits?
Why are there two collector resistors in the first circuit but in the second circuit there is only one?
What is the difference?
When there is only one collector resistor, does this affect behavior?
- 17.1k
5
votes
2
answers
660
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Why does Q1 turn on and Q2 turn off when I apply 5 V?
Differential amplifier circuit below:
When the inverting input is floating and the non-inverting input is grounded Q1 turns off and Q2 turns on. This part I understand; V2 is supplied to Q2's BE junc …
