phantastronn.
/fanˈtastr(ə)n/, /fanˈtastrɒn/, U.S. /fænˈtæstrən/, /fænˈtæsˌtrɑn/ Electronics.
A pulse-generating circuit in which a brief triggering pulse produces at one electrode a longer pulse whose duration is proportional to an applied control voltage, and at another electrode a linear sweep voltage of the same duration (which can then be used to generate another pulse that will occur at a definite interval after the triggering pulse).
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the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > electronic circuit > [noun] > trigger circuit > used in time-base operations
time base1934
phantastron1943
sanatron1946
sanaphant1949
1943 (title) An adaptation of the phantastron delay multivibrator circuit to the 6SA7 tube. (M.I.T. Radiation Laboratory Rep. 63-21.)
1947 L. J. Haworth in L. N. Ridenour Radar Syst. Engin. xiii. 500 The phantastron of Fig. 13·17 is a flip-flop..which serves as a timing circuit maintaining its calibration to about one per cent.
1956 Operations Res. 4 654 A double screen-coupled phantastron..performs the necessary timing and switching operations.
1964 R. Blitzer Basic Pulse Circuits vi. 215 Besides the sawtooth waveshape being used as a sweep, the phantastron is also often used as a delay circuit.
1999 Re: Need help identifying: Computer Logic Modules? in rec.radio.amateur.boatanchors (Usenet newsgroup) 21 June As I recall, a phantastron is a bistable circuit which provides a time delay between receiving a control pulse and changing states.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1943