Can anyone suggest a few part numbesr for the highest wattage audio amplifier IC's that will run from a 12VDC supply, ie. SLA batteries?
It does not need to be stereo and there are no other critical specifications, except it is not to be running in bridge mode.
Simple is best for this app. I am thinking of one of those minumum external parts things.
The most I could find was 20W per channel into 4ohms.
Thank you,
Steven Kendall
Absolute maximum possible peak-to-peak power is 144 watts into 4 ohms.
is 144 watts into 4 ohms. Single ended wih a 4=CE=A9 load, ~4W max
"Steven Kendall"
** ??????????You just a spoil sport ?
** That would * HAVE * be a bridge mode IC - d*****ad....... Phil
On a sunny day (Tue, 19 Dec 2006 09:28:52 GMT) it happened Robert Baer wrote in :
*without output transformer* As he wants no high quality perhaps throw in some iron, is there a chip that will do 50A current ;-)? If not add some couple of hundred MOSFETS LOL.
AFAIR there was a European IC which internally doubles the supply, but I haven't found it in my collection of datasheets.
-- ciao Ban Apricale, Italy
** Allow the stupid OP produce the type number HE is alluding to -
Cos YOU have no f****ng idea what it is.
....... Phil
TDA1562
martin
"martin griffith"
** That is a * bridge mode* power amp IC that delivers 20 watts continuous into 4ohms.Yawn.
.... Phil
Cos YOU have no f****ng idea what it is.
martin
What's the math behind that? And what is "peak-to-peak power"?
John
Maybe it's really peek-to-peek ?:-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
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I love to cook with wine. Sometimes I even put it in the food.
into 4 ohms.
P = E * E / R or (12V)*(12V)/4ohms) or 144/4 or 36Watts (single-ended).
Lemme see...12V into 4 ohms one way (peak plus for reference) and 12V into 4 ohms the other way (peak minus for reference). Pushing that slightly, that is 24V; P=E*E/R as i vaguely remember - do the math.
It's amazing what you can do with numbers.
John
atts into 4 ohms.
d).
Correct formula but wrong value for E. A 12V source limits the swing to
12volts PEAK to PEAK which is an RMS voltage of 4.2V so max power to 4 ohm load with 12V source is around 4.5 watts RMS power.
into 4 ohms.
For single-ended non-bridge circuits, yes.
wattage audio
batteries?
critical
mode.
minumum
power is 144 watts into 4 ohms.
(single-ended).
swing to
power to 4
For single-ended non-bridge circuits, yes. .
---------- The maniac solution (without checking some details): Put a switching boost converter on that 12V..and power an Apex Semiconductor PA50..Ratings are 400Watts...40Amps continuous...100Amps peak...per amplifier. Maybe 40000 Watts instantaneous peak power on a 4ohm load!!! :)
More down to earth..See National Semiconductors audio modules.. Also.. Check out the complicated Class D controllers..
I only listen to about 3Watts.
D-------------
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