AVR-Chat

You need a regular old car stereo amp and an accelerometer.
 
 
In a message dated 6/22/2008 1:34:02 A.M. Eastern Daylight Time,  
xolang1@yahoo.com writes:

hello,

I have 2 requirements that i hope someone could  help me on:

1) I have a certain circuit that is able  to drive an 8Ohm speaker with a 
maximum output of 1watt. the voltage  output is measured from 0 to 5V. The sound 
however , is quite soft and I need  to install this inside a vehicle which is 
expected to be noisy. I need this  audio output to be amplified to some good 
degree (about 10 - 20watts to my  estimate). The Amp has to be of high fidelity 
as the output is not of the  best quality. My problem is I am not familiar 
with audio circuitry and there  seem to be numerous solutions on the web. can 
anyone recommend a good  solution, possibly 1 single chip solution that does all 
the analog handling  and is powerful enough to drive a 10 - 20w speaker. 
Also, is it possible to  connect the speaker ouput of my current set up to this 
amp dirrectly without  worrying about  impedances etc?
???
audio circuit-----(output is good for 8Ohm  skr)---------------------->10-20w 
Power Amp


2) I  need a vibration sensor that is able to detect strong vibrations in a 
vehicle  (e.g. when the tires hit a hump). ideally this solution in also single 
 chip.output could be a simple ttl logic or analog voltage.  


If possible, solutions that can be bought individually  like from arrow / 
digikey would be best as this is only for  hobby-grade.

any help is much appreciated.

-  Chris




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