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Xref: sserve comp.sys.ibm.pc.hardware:33900 comp.unix.bsd:6823 Newsgroups: comp.sys.ibm.pc.hardware,comp.unix.bsd Path: sserve!manuel.anu.edu.au!munnari.oz.au!spool.mu.edu!wupost!uunet!mcsun!sun4nl!dutrun!donau!zen.et.tudelft.nl!wolff From: wolff@zen.et.tudelft.nl (Rogier Wolff) Subject: Re: Question on Diamond Clock Synthesizer Message-ID: <1992Oct20.093825.7801@donau.et.tudelft.nl> Sender: news@donau.et.tudelft.nl (UseNet News System) Nntp-Posting-Host: zen.et.tudelft.nl Organization: Delft University of Technology, Dept. of Electrical Engineering References: <1b7tmgINNi06@agate.berkeley.edu> <1992Oct19.082420.16353@Informatik.TU-Muenchen.DE> <1992Oct19.151409.24581@osf.org> <1992Oct19.190736.11988@fcom.cc.utah.edu> Date: Tue, 20 Oct 1992 09:38:25 GMT Lines: 20 terry@cs.weber.edu (A Wizard of Earth C) writes: >3) Silicon/Boron semiconductors don't like heat. I have actually seen > a chip crack due to overheating (A UART on a DHV11). I once blew the top of a chip. Litterally. The chip now has a nice crater in it where you can see the actual silicon surface. The chip was an opamp, with a very high input impedance. However input range was 0.5 volts, probably implemented as two diodes beteen the inputs. What happened was I had grounded one of the inputs, and accidently hit one of the power supply leads with a wire connected to the other input. PANG! Roger. -- **** a 486 in V86 mode is like a VW buggy with a 6 litre V12 motor. **** EMail: wolff@duteca.et.tudelft.nl ** Tel +31-15-783644 or +31-15-142371