lumanauw said:Once I measure the voltage drop accross car amp's fuse (the fuse is 2x30A). When the amp is loaded, I notice that the drop at the fuse can be 1-2V.
Can the fuse be seen as an inductor in this case? Because it has voltage drop on it.
lumanauw said:Can the fuse be seen as an inductor in this case? Because it has voltage drop on it.
Eva said:An inductor is a series element. Placing it at the battery side or inside the amplifier makes no change at all.
Eva said:Current consumption waveform is just an amplified and low-pass filtered version of the sum of speaker current waveforms.
Perhaps you could clarify this statement, because it makes little sense to me. If I inject a 1 kHz sine wave into my amplifier, feeding a speaker or resistive load, the current drawn in the 12V line is DC, nothing else. It will have some high frequency content based on the switching frequency of the SMPS, but not at all related to the audio output of the amplifier. It WILL be related to the POWER output of the amplifier, but it has nothing to do with the audio frequency.