What is the role of the resistor at the input of the OpAmp?
91261
Op-Amp Input Resistor?
20996
What does a resistor do?
79626
What is the purpose of the emitter resistor in a common emitter amplifier?
121428
How to amplify and offset the voltage in an opamp?
28444
Are two (or N) resistors in series more precise than one big resistor?
153812
Resistor value for Opto-coupler input
121688
Why do you need 2 resistors when hooking up a transistor as a switch
68852
Why are the "common" resistors and capacitors rated the way they are?
47813
How do we calculate the input impedance of an op-amp?
55216
Reasons to use opamp
92711
For the following amplifier, why is the output voltage 0 when input voltage is 0?
91975
Solving an Op-amp circuit
157314
Why, microscopically, is the voltage drop across a resistor affected by the current through it?
51127
Why is voltage same for the two resistors connected parallel in circuit?
80746
Total resistance with resistors bridging two branches
36776
Input impedance of Arduino Uno analog pins?
6784
How does the current know how much to flow, before having seen the resistor?