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From: hack@math13.math.umbc.edu
Newsgroups: sci.electronics
Subject: Power supplies for audio amps
Message-ID: <1991May9.120758.20464@umbc3.umbc.edu>
Date: 9 May 91 12:07:58 GMT
Sender: newspost@umbc3.umbc.edu (News  posting account)
Lines: 11


  I have a question about the power supplies used in high
power hi-fi audio amplifiers.  I would assume that the power
supplies are voltage regulated.  The question is can switching
power supplies be used or are linears required, assuming the
power supply will fit into the same box.  Also, what
insolation and sheilding must be there to prevent hum and
noise pickup.

		Thank you very much in advance,
		J. Hack