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losafojjog
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Homework Statement
Design a noninverting voltage amplifier which can be varied between 1 and 100 capable of driving a 10 K load to +5V at a frequency of 1KHz.
Homework Equations
1. In order to vary the gain should R1 and R2 be 100k potentiometers? Is there another way?
2. For a gain value to equal 1 (vout/vin = (R2/R1)+1 =1) R2 should be 0. Would using a value of 1k/100k be a close enough approximation? Is there another way to work this out?
3. I don’t know if I understand correctly ‘drive a 10k load to +/-5V’ is my schematic correct?
4. If the VAMPL stays at 0.1V then vout varies with the gain. For example a voltage gain of 100 makes vout +/- 10V and a gain of 2 makes vout +/- .2V is there a way to keep vout consistent at +/-5V regardless of gain or is it implied in the problem that +/-5V is supposed to just fall in the range?
5. Is R3 necessary?
The Attempt at a Solution
please see attached a schematic