Simulink for current realization in dB

How can we realize in simulink if we have been specified that some current is x dB of some other currrent? For e.g. i1 = 15 dB of i2. Do we take 20 log of i2 as we normally do for power or is there something else to it. How can this be realized in simulink?

[Mathieu NOE]

hello

you can convert the dB gain in linear gain and put this value in a "gain" block

linear_gain = 10^(dB_gain / 20)

[Nitin Kapgate]

Is the current 'i1' is 'x' db less or more than the current 'i2'?

[SSK]

only one current is known i2 and x is known

Answer 1

[Aman Vyas]

Hi,

You can use Matlab Function block in your simulink and customize it as required. There claerly you can first convert dB to linear gain and then finally can use i1= x* i2; where x is linear gain.

For more on this function you can refer to below documentation link:

https://www.mathworks.com/help/simulink/slref/matlabfunction.html?s_tid=srchtitle

Hope it helps !