H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
H03K17/54—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements of vacuum tubes
Landscapes
Indication Of The Valve Opening Or Closing Status
(AREA)
Dispositif permettant a un appareil maitre de mettre automatiquement en service au moins un appareil esclave des la mise en service de l'appareil maitre