Enter the scale factor, the input voltage (volts), and the normalization constant (volts) into the calculator to determine the Log Amplifier Voltage.
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Log Amplifier Voltage Formula
The following formula is used to calculate the Log Amplifier Voltage.
Vo = K * ln ( Vi / Vref)
- Where Vo is the Log Amplifier Voltage (volts)
- K is the scale factor
- Vi is the input voltage (volts)
- Vref is the normalization constant (volts)
How to Calculate Log Amplifier Voltage?
The following example problems outline how to calculate Log Amplifier Voltage.
Example Problem #1
- First, determine the scale factor. In this example, the scale factor is determined to be 76 .
- Next, determine the input voltage (volts). For this problem, the input voltage (volts) is measured to be 5 .
- Next, determine the normalization constant (volts). In this case, the normalization constant (volts) is found to be 4.
- Finally, calculate the Log Amplifier Voltage using the formula above:
Vo = K * ln ( Vi / Vref)
Inserting the values from above and solving yields:
Vo = 76 * ln ( 5 / 4) = 16.958 (volts)
Example Problem #2
Using the same method as above, determine the variables required by the formula. For this example problem, these are:
scale factor = 80
input voltage (volts) = 15
normalization constant (volts) = 9
Enter these given values into the calculator or above yields:
Vo = 80* ln ( 15 / 9) = 40.866 (volts)
