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From: earl@phred.UUCP (choo choo earl)
Newsgroups: sci.electronics
Subject: looking for part
Keywords: LP1000
Message-ID: <3288@phred.UUCP>
Date: 15 Nov 90 01:27:47 GMT
Distribution: usa
Organization: Physio Control Corp., Seattle WA
Lines: 25

Hi there.
I'm looking for information on a part I used to use but has since gone out
of existance.  The part was numbered LP1000 and was made by Lithic Systems
back in the mid 1970's.  It was listed as a mizer circuit, and was used for 
oscillator and flasher circuits.  The part was housed in a TO-92 can, with 
three leads.  The data book had the "equivilent circuit" listed, and we
constructed some from this that worked. If anyone has information on a 
replacement part, or has a copy of the old data book, I would sure like
to find out. 
The circuit worked using a negative resistance principle.  A capacitor
was charged through a resistor, and when it reached the trigger voltage,
the IC would discharge it through the load.  I know there are other IC's
that do this, but this one worked just off the capacitor voltage, and didn't
draw any quiescent (sp?) current.  The basic operation was like a neon
lamp oscillator, but this all happened at 4V.  
Thanks in advance.
earl@phred
Physio-Control Corp
(206) 867-4255
 
-- 
DIG A DUCK DIG A DUCK DIG A GEODUCK DIG A DUCK DIG A GEODUCK DIG A DUCK A DAY
These opinions are mine.  Nobody else wants them.
earl@phred      Physio Control Corp.   Redmond Wa   (206)867-4255
so there