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- Path: sparky!uunet!spool.mu.edu!uwm.edu!linac!att!cbnewse!cbnewsd!att-out!cbfsb!cbnewsg.cb.att.com!mxl
- From: mxl@cbnewsg.cb.att.com (marc.a.levy)
- Subject: Re: 12V Power Amplifier Design
- Message-ID: <1993Jan26.122452.27095@cbfsb.cb.att.com>
- Sender: news@cbfsb.cb.att.com
- Organization: AT&T
- References: <thomasd.33.727991442@tps.COM>
- Date: Tue, 26 Jan 1993 12:24:52 GMT
- Lines: 27
-
- 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.
- >
-
- The powersupply is the most complicated, and most expensive
- part of the amplifier.. It is no trivial task to design and
- build. I would reccomend you find a DC to DC converter in a
- catalog for your applications, and current requirements..
- Theese items get verry expencive in higher current models.
- For a 100 watt mono amplifier, your would probably need like a
- split 24 supply, at 4 amps.. That could run you over $100.
-
- If you are still interested, there was a article in a back
- issue of Radio Electronics, on "How to build your own car
- stereo amplifier", but if I remember correctly, the
- transformer in the powersupply was over $30 (Just for the 1
- component), and the total cost of the amp was not much less
- that going to the store and buying a similar one. After you
- buy all the parts, and the HUGE chunk of heatsink you will
- need for a large power amplifier, it will not be worth it.
-
- Marc.
-
-