Article View: sci.electronics
Article #3526Re: Transistor Trivia
From: commgrp
Date: Fri, 27 Oct 1989 20:33
Date: Fri, 27 Oct 1989 20:33
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I believe Regency of Indianapolis marketed the first transistor radio, circa 1956. >... my buddy eventually sat upon (or otherwise mangled) his >radio and he gave it back to me for salvage. I still have all of the >CK-722 transistors! >--Myron A. Calhoun, PhD EE, W0PBV I burned out my Raytheon CK-722, so dissected it. To my surprise, there was another smaller blue aluminum case (with red dot on emitter) inside the outer one, with a layer of white plastic foam between. Why did they do that?? It seemed more like thermal insulation than a heat sink, and germanium transistors couldn't stand heat. -- Frank Reid W0MKV @ K9IU reid@gold.bacs.indiana.edu
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!silver!commgrp From: commgrp@silver.bacs.indiana.edu Newsgroups: sci.electronics Subject: Re: Transistor Trivia Message-ID: <7200039@silver> Date: 27 Oct 89 20:33:00 GMT References: <14290@well.UUCP> Organization: Indiana University CSCI, Bloomington Lines: 20 Nf-ID: #R:well.UUCP:-1429000:silver:7200039:000:676 Nf-From: silver.bacs.indiana.edu!commgrp Oct 27 15:33:00 1989