home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.electronics:23439 rec.audio:19469 rec.audio.car:5859 rec.audio.pro:2858
- Newsgroups: sci.electronics,rec.audio,rec.audio.car,rec.audio.pro
- Path: 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
-
- 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
-
-
-
-