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Article #16680Re: 12V Power Amplifier Design
From: Lennard J. Kong
Date: Tue, 26 Jan 1993 18:28
Date: Tue, 26 Jan 1993 18:28
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In article <thomasd.33.727991442@tps.COM> thomasd@tps.COM (Thomas W. Day) writes: >Can anyone give me some advise on power amplifier design for 12VDC power >supplies (automotive applications)? Specifically, what kinds of power >supplies are typically used in high power (50W+) designs? I am hoping to >find a practical way to get a high voltage (>+/-25VDC) supply for a bipolar >amp. This is not a very trivial thing to do, this is proabably one of the reasons that home amps are easier to fix than auto amps. You will need some kind of circuit to alternate or switch the 12v and use a power transformer to boost it up. Also when yoiu boost voltage, the current consequently drops, so you need to have a circuit which is quite beefed up to provide a high current. Thats a major selling point of many manufacturers now, they claim their amps not only provide the high voltage but the high current power source. I have considered doing his many times myself since I had many different designs for simple to complicated amps. I don't think itt is possible from scratch unless you use the exact components and circuit you would find in a presently available amp. From my experience I think the highest power you can get from 12V without raising the voltage is abou 33Wrms, which was a Clarion Eq/Amp. Lennard
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Newsgroups: sci.electronics,rec.audio,rec.audio.car,rec.audio.pro Path: arc1-ca.pugleaf.net!sparky!uunet!tcsi.com!iat.holonet.net!news.cerf.net!usc!howland.reston.ans.net!zaphod.mps.ohio-state.edu!uwm.edu!cs.utexas.edu!torn!watserv2.uwaterloo.ca!watmath!undergrad.math.waterloo.edu!napier.uwaterloo.ca!ljkong From: ljkong@napier.uwaterloo.ca (Lennard J. Kong) Subject: Re: 12V Power Amplifier Design Message-ID: <C1H4nC.43C@undergrad.math.waterloo.edu> Sender: news@undergrad.math.waterloo.edu Organization: University of Waterloo References: <thomasd.33.727991442@tps.COM> Date: Tue, 26 Jan 1993 18:28:22 GMT Lines: 23