Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!decwrl!apple!bionet!agate!darkstar!ucscc.UCSC.EDU!haynes From: haynes@ucscc.UCSC.EDU (99700000) Newsgroups: sci.electronics Subject: Re: Homemade tubes, semiconductors, etc... Message-ID: <5772@darkstar.ucsc.edu> Date: 6 Aug 90 06:17:54 GMT References: <1814@mountn.dec.com> Sender: usenet@darkstar.ucsc.edu Reply-To: haynes@ucscc.UCSC.EDU.UUCP (Jim Haynes) Organization: University of California, Santa Cruz CATS Lines: 16 In article <1814@mountn.dec.com> baker@wbc.dec.com writes: > A LOOOOONNNNNNGGGGGGGGG time ago, there was an article in > Popular Electronics on making wet-cell diodes using a vat > of sodium borate and water with two electrodes in it, one > copper and the other aluminum. The idea was to connect a I've heard these were quite common in the early days of radio. They were often called 'slop jar' rectifiers. The breakdown voltage is fairly low, so you had to use a lot of jars in series for high voltage. haynes@ucscc.ucsc.edu haynes@ucscc.bitnet ..ucbvax!ucscc!haynes "Any clod can have the facts, but having opinions is an Art." Charles McCabe, San Francisco Chronicle