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Article #17612

answer to "need television sound amplifier"

#17612
From: mungo
Date: Tue, 26 May 1987 16:48
26 lines
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I guess that I am due the "wally of the week" award regarding my
problem of `clipping' with my TV amplifier (re the posting I made a
few weeks ago seeking advice).
After dismantling and reconstructing the amplifier a couple of times,
and also attenuating the input signal (all to no avail), I reasoned as
follows:
	"The clipping is due to the amplitude of the desired output signal
	trying to climb greater than the supply voltage, so why not
	increase the supply from its current 9v to (say) 12v ?"
When I tried this (using a different battery), the problem disappeared!
Feeling very self-satisfied, I checked the 9v battery, only to find it
quite `flat' at 6v.
Oh well, they always say to check the obvious bits first.
(I was dissuaded from this because the 9v battery in question was only
purchased a few months ago (I know about "shelf-life" just in case
some readers care to point out this point)).

Many thanks to all those who took the time and trouble to reply: the
comments were appreciated. If nothing else, I hope this `experience'
helps others.
Mungo Henning
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From: mungo@strath-cs.UUCP
Newsgroups: sci.electronics
Subject: answer to "need television sound amplifier"
Message-ID: <613@stracs.cs.strath.ac.uk>
Date: Tue, 26-May-87 12:48:36 EDT
Article-I.D.: stracs.613
Posted: Tue May 26 12:48:36 1987
Date-Received: Fri, 29-May-87 00:39:51 EDT
Reply-To: mungo@cs.strath.ac.uk (Mungo Henning)
Distribution: world
Organization: Comp. Sci. Dept., Strathclyde Univ., Scotland.
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