Патент USA US2126288код для вставки
Aug. 9, 1938. K. SCHLESINGER ELECTRONIC TUBE 2,125,233 - " Original Filed June 15, 1934 June/rial‘: Patented Aug. 9, 1938 ‘2,126,288 UNITED STATES PATENT OFFICE 2,126,288 ELECTRONIC TUBE Kurt Schlesinger, Berlin, Germany, assignor to Radioaktiengesellschaft D. S. Loewe, Berlin Steglitz, Germany Original application June 15, 1934, Serial No. 730,714. Divided and this application Decem her 5, 1935, Serial No. 52,956. In Germany June 17, 1933 2 Claims. (01. 250--27.5) The object of the invention is an electronic tube, more particularly for rectifying and poten tial-amplifying purposes. According to the invention, the electronic cur 5 rent produced by a hot cathode, preferably an indirectly heated equipotential cathode, is con trolled on the one hand in the manner known per se by space charge control, and at the same time, additionally thereto, likewise in the manner 10 known per se, by de?ection (selection) control. According to the invention there are provided means for controlling the anode current simul taneously by space charge control and by de?ec tion control. 15 ' . It is also possible, in accordance with the in vention, to provide in an electronic tube of this character additional grids, such as space charge, screening and interception grids. A form of embodiment of the tube according 20 to the invention is illustrated diagrammatically by way~of example in the drawing. - In the drawing, l is the cathode, ll are the preferably negatively‘biassed control plates, 6 the screening grid plates, 1 is the anode and ill the 25 wall of the tube. 3 and II are additional grids. 'The elements it cause simultaneously a control of ' the emission and also a de?ection of the emitted electrons. If the elements ll are provided with a strong negative bias, the emitted electrons 30 will be bunched together at the centre and in tercepted by the elements 6, so that no electrons ‘ impinge against the anode. If on the other hand the control potential is‘ shifted into positive the electrons are able to pass between the elements 4 35 and the elements 3 and meet against the anode l. The arrangement and embodiment of the ele ments 4 and 6 and also the biassing of these ele ments should be suitably selected for the partic ular purpose for which they are intended. This form of embodiment is particularly suit able as recti?er. ‘ The invention is in no way limited to the form of embodiment illustrated, which has been quoted merely for the purpose of explanation. The advantage of the arrangement according to the invention is to be regarded more particu larly in the fact that the same permits of a very considerable increase in the steepness and an adaptation of the characteristic, practically as de sired, to the particular purpose concerned. I claim: 10 1. 'An electron-discharge device,‘preferably for rectifying purposes, comprising an evacuated con tainer, a cathode, an anode structure, means for 15 controlling the density of the electronic stream and for de?ecting said electronic stream, said controlling means consisting of a plurality of plates radially arranged with respect to said cathode, and a plurality of further plates ar 20 ranged between the ?rst said plates parallel to said cathode, the width of each of said further plates being considerably smaller than the dis tance between every two adjacent ones of the ?rst said plates. 25 2. An electron discharge device, preferably for rectifying purposes, comprising an evacuated con tainer, a cathode, an anode structure, means for controlling the density of the electronic stream and for de?ecting said electronic stream, said 30 controlling means consisting of a plurality of plates radially arranged with respect to said cathode, and a plurality of further plates ar ranged between the ?rst said plates parallel to said cathode, the width of each of said further 35 plates being considerably smaller than the dis tance between every two adjacent ones of the ?rst said plates, a grid surrounding said cathode. KURT SCHLESINGER.