Enter the linear regulator input (watts) and the linear regulator output (watts) into the calculator to determine the Linear Regulator Efficiency.
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Linear Regulator Efficiency Formula
The following formula is used to calculate the Linear Regulator Efficiency.
Elr = RO/ RI *100
- Where Elr is the Linear Regulator Efficiency (%)
- RI is the linear regulator input (watts)
- RO is the linear regulator output (watts)
How to Calculate Linear Regulator Efficiency?
The following two example problems outline how to calculate the Linear Regulator Efficiency.
Example Problem #1:
- First, determine the linear regulator input (watts). In this example, the linear regulator input (watts) is given as 30.
- Next, determine the linear regulator output (watts). For this problem, the linear regulator output (watts) is given as 25.
- Finally, calculate the Linear Regulator Efficiency using the equation above:
Elr = RO/ RI *100
Inserting the values from above and solving the equation:
Elr = 25/ 30 *100 = 83.334 (%)
Example Problem #2:
Using the same process as above, first define the variables required by the formula. In this case, these values are:
linear regulator input (watts) = 600
linear regulator output (watts) = 100
Entering these values yields:
Elr = RO/ RI *100 = 16.66 (%)
