jeremiah
JimJ
5,000+ posts
Tangled Up in Blue
It doesn't convert anything, it takes a small AC voltage and makes it bigger.
Just a clamp meter with a peak hold function and DMM...and perhaps an oscilloscope to be sure that you aren't sending the amp into clipping.
JimJ
5,000+ posts
Tangled Up in Blue
Yes...
ultimate157
5,000+ posts
Engineering Student
The amplifier takes DC current to work. It works by taking the input signal from the RCAs and makes it bigger. for example, from like 2.x volts to 50+ volts.
JimJ
5,000+ posts
Tangled Up in Blue
Your head unit.
JimJ
5,000+ posts
Tangled Up in Blue
If you can't understand that, BCAE1.com has some excellent explanations on how amplifiers work...
ultimate157
5,000+ posts
Engineering Student
+1. No offense or anything, but I think a little reading on http://www.BCAE1.com will benefit you greatly //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Actually, yes it does.
There is an inverter inside that amplifier which takes the DC from your 12v electrical system and "inverts" it to create a high voltage sine wave, used as the basis of the high voltage rail in your amplifier. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
But of course thats just to supply the voltage for the above mentioned "amplification" of a low power signal to a much higher powered one.
helotaxi
5,000+ posts
Kilroy was Here
There is nothing like a sine wave in the power supply of an amp. A switching power supply creates chopped DC ups the voltage with a transformer and then rectifies it back to +/- DC for the voltage rails. The output stage then uses the input signal from the HU to modulate the rail voltage to the AC output signal.
DC is a terrible term. it means "constant, unchanging", but is defined as "Direct Current". which is annoying because a DC battery doesn't have a constant CURRENT output, but rather a constant voltage... further, a battery can be charged or discharged, so current isn't even always the same polarity, let alone constant!
I beleive there is some difference between the term as used by electricians and as used by engineers.
the amp converts (and amplifies) an AC signal to an AC signal, but gets power from a DC source. so it is a form of DC-AC converter (for car amplifiers).
I beleive there is some difference between the term as used by electricians and as used by engineers.
the amp converts (and amplifies) an AC signal to an AC signal, but gets power from a DC source. so it is a form of DC-AC converter (for car amplifiers).
I'm on a really bad roll lately with this stuff. //content.invisioncic.com/y282845/emoticons/crying.gif.ec0ebefe590df0251476573bc49e46d8.gif
Yea, of course, its a switching power supply, there is no sine wave.
~goes back to building his non-switching, class A hi-fi amps~ //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
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