Solution to Senditron-question: Yesterday a visit from a former tube developing engineer who worked at Philips-Valvo for a long time brought some light into this question
Most of you were guessing right regarding the use of the tube. This is a small summary of what showed up: 1.) it�s NOT a voltage reference cell 2.) it�s not a mechanical inclination switch 3.) it�s a senditron tube, I got some excerpts from a Philips book on gasfilled tubes which explains how some of them work. the "normal" senditron is much larger, mine has a length of about 10 cm but they are larger otherwise. They might be seen as relatives to an ignitron at that time. My small one does not have the trigger electrode dipping in the Hg pool as seen in the literature, it has two electrodes only. If you llok at the picture of mine, http://www.wuesten.net/strange/senditron2.jpg you willsee that the bulb is pinched on both legs. Somebody has guessed already that something is missing and he was right. This tube had an external spark gap installed and when fitring this, field strenth must have been stron enough to ignite the arc in the tube. I have no idea where this spark gap assembly went to and I have not seen any pictures confirming this but it�s the only interpretation that makes sense. Thank you very much for all your contributions and ideas Jan from Germany. mit freundlichen Gruessen---best regards----cordialement Jan Wuesten Frag'Jan Zuerst -----Ask Jan First Dipl. Ing. Jan Philipp Wuesten Elektronik Rodauer Strasse 38 D- 64372 Ober Ramstadt, Germany Phone: +49-6154-575556 Fax : +49-6154-575557 <http://www.die-wuestens.de> (German and English) mail to <[EMAIL PROTECTED]> or <[EMAIL PROTECTED]> -- Author: Jan Wuesten 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).
