![subject](/tpl/images/cats/User.png)
Engineering, 12.03.2020 02:13 sherlock19
Sometimes, we need an amplifier with an accurate gain. Even using 1% tolerance resistors may not be sufficient to provide the required gain tolerance. In these designs, trimmer resistors must be used that can be adjusted after the circuit is built. Each resistor in the circuit can be replaced by a series combination of a fixed resistor and an adjustable resistor. Consider the inverting amplifier below with R1=47kΩ and R2=450kΩ. The source signal internal resistance varies from 0 to Rsmax=1kΩ. Only one trimmer resistor can be added, and it is going to be put in series with the feedback resistor. What are the lowest and highest values R must be able to have so that the gain can be adusted to Av=−10±0.5%? Assume that all resistors have 1% tolerance.
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Burgers vector is generally parallel to the dislocation line. a)-true b)-false
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
You know the right answer?
Sometimes, we need an amplifier with an accurate gain. Even using 1% tolerance resistors may not be...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 24.07.2019 15:00
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 24.07.2019 15:00
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 24.07.2019 15:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
Health, 24.07.2019 15:00
![question](/tpl/images/cats/mat.png)
Mathematics, 24.07.2019 15:00
![question](/tpl/images/cats/istoriya.png)
History, 24.07.2019 15:00
![question](/tpl/images/cats/mat.png)
Mathematics, 24.07.2019 15:00
![question](/tpl/images/cats/mkx.png)
Arts, 24.07.2019 15:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 24.07.2019 15:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)