554K northintro.pdf - Dean-O's Toy Box

Table of Contentsix10. Cathode Pulsers: Hard-Tube Modulators ..........................................................14610.1 The full-control switch tube .....................................................................................lM10.2 Hard-tube modulator topology ...............................................................................lQ10.3 Storage capacitors .......................................................................................................15510.4 Vacuum tubes as switch tubes ..................................................................................16110.4.1 The 7560 tiode switch tube ............................................................................16710.4.2 The WL-8461 triode switch tube ....................................................................17010.4.3 The ML- 6544 triode switch tube ...................................................................l7O10.4.4 The S94000E and 4CPW1OOOKBtetrode switch tubes ................................17310.4.5 The ML-8549 magnetically beamed triode ...................................................l7910.4.6 The ML- 8618 magnetically beamed triode ..................................................18210.4.7 The L-5012 and L-5097 Injectronm beam-switch tubes ..............................18410.4.8 The 8454H Crossatronm switch .....................................................................18610.5 Load lines ....................................................................................................................l8910.6 Pulse fall time of hard-tube modulator ..................................................................19110.7 Some practical examples of hard-tube modulators ..............................................19510.7.1 The 200-MW triode (WL-8461) hard-tube modulator ................................19510.7.2 An 18-MW hard-tube modulator using the L-5097 beam-switch tube ...19811, Modulating-Anode Pulsers ...................................................................................20011.1Modulating-anode-pulser topologies .....................................................................20011.1.1 Passive pull-up, active pull-down .................................................................20011.1.2 Active pull-up, passive pull-down ................................................................20111.1.3 Active pull-up and pulldown .......................................................................20411.1.4 An attempt at simplified amplitude control ................................................20511.1.5 The grid-catcher type of amplitude control .................................................20611.16 The grid-catcher circuit with potentiometer-type control ..........................20711.1.7 The gate-catcher type of amplitude control .................................................2O811.1.8 The “quasi-resonant” modulating-anode pulser .........................................21011.1.9 The modulating-anode power supply/cathode-pulser hybrid .................21311.2 The self-capaatance of modulator decks ...............................................................21511.3 Vacuum tubes appropriate for modulating-anode-pulser service ....................21811.3,1 The 4PR250C/8248 tetrode ............................................................................2l811.3.2 The 8960 tetrode ...............................................................................................2l811.3.2 The Y-847 tiode ................................................................................................2l811.3.4 The YU-146 tetrode ..........................................................................................21911.3.5 The TH-5184 tetrode ........................................................................................ZO11.3.3 The TH-5188 tetrode ........................................................................................22011.4 Some representative modulating- anode pulser designs ......................................22011.4.1 The BMEWS dual-klystron modulator .........................................................22O11.4.2 The Millstone Hill radar transmitters ............................................................22l11.4.3 Dual-klystron modulating-anode pulser forparticle-accelerator RP source ........................................................................22411.4.4 The modulating-anode pulsers for the MAR-1 radar system ....................22611.4.5 The long-range imaging radar transmitter modulating-anode pulsers ...22911.4.5 The modulating-anode pulser for theHaystack Auxiliary Radar (HAX) ..................................................................23212. Control-Grid Modulators ......................................................................................23412.1 Grid-modulator topolo@es ........................................................................................237