A manufacture produces integrated circuit amplifier modules that have voltage gains, which vary from 12,000 to 24,000 due to production tolerances. If the modules are to be used with 5 percent neg feedback applied , determine the min and max values of voltage gain
2007-01-30 08:26:42 · 2 answers · asked by servalan 1 in Science & Mathematics ➔ Engineering
In the Neg f/b case, the output will be '100%' of whatever multiple of the f/b is applied.
SO, if 5% f/b is applied, then '100%' == x20 (i.e. 20 times the input).
Since this is well within the open loop gain (stated as x12,000 min) there should be no problem achieving x20 :-)
The accuracy will depend only on the tolerance of the components used in the feedback path - typical Resistor tolerances are in the 2% region, so I would expect a gain of 20 +/- 0.2 i.e. between 19.8 and 20.2
2007-01-30 09:43:53 · answer #1 · answered by Steve B 7 · 0⤊ 0⤋
Sounds like your homework.
2007-02-01 20:29:13 · answer #2 · answered by ZORCH 6 · 0⤊ 0⤋