Re: [AVR-Chat] Audio power amp and vibration sensor
2008-06-22 by BobGardner@aol.com
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 [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links **************Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007) [Non-text portions of this message have been removed]