That makes it a cousin to the Ignitron. Ignitrons are still in use in some industrial equipment, but SCRs can usually do the same job.
----- Original Message ----- To: "Multiple recipients of list CHIPDIR-L" <[EMAIL PROTECTED]> Sent: Monday, June 16, 2003 3:29 PM > it is a switch - even if not of the kind you might be thinking of... > > http://www.tubecollector.org/senditron.htm > > Uwe. > > JW> Hello, > JW> maybe this is a bit off-topic but who knows :-) > JW> This is a question for all those interested in history of tubes and > JW> technology. > JW> I have a strange tube here of totally unknown use: > JW> It�s length is approx 10 cm, looks like a letter "H" with one electrode at > JW> the bottom of each leg and quite some mercury. > JW> It�s NOT a switch, there is not enough mercury in it to cover both > JW> electrodes at once in any possible position. > > JW> so it must be something else... > > JW> pics at > > JW> http://www.wuesten.net/strange/senditron1.jpg > JW> http://www.wuesten.net/strange/senditron2.jpg > > JW> What�s written on it: > > JW> There is a small stamp on it saying "Senditron" ; ...wter ( disturbed, > JW> illegible beginning of a word ending with "wter" ) and a datecode 4 /65 > JW> plus a single letter "D" > > JW> nothing else. > > JW> Anybody having an idea what this is, what it might be good for and > JW> who might have made it ? > > JW> It�s a nice piece in my tubecollection and I always like to know what I > JW> collect :-) > > JW> Thank you > > JW> Jan > > -- > Author: Uwe Zimmermann > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB CHIPDIR-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Author: Syd Levine \(AnaLog\) INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
