US2438962A - Protection of thyratron in impulse generating circuits - Google Patents
Protection of thyratron in impulse generating circuits Download PDFInfo
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- US2438962A US2438962A US548460A US54846044A US2438962A US 2438962 A US2438962 A US 2438962A US 548460 A US548460 A US 548460A US 54846044 A US54846044 A US 54846044A US 2438962 A US2438962 A US 2438962A
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- thyratron
- tube
- resistance
- anode
- artificial line
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/55—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a gas-filled tube having a control electrode
Definitions
- This invention reiatesttolthyratronpulse generating circuits and more.particularlitb cireuits; of the type described employing an artificialjline; discharging v through a. thyratron in" response to:
- circuits of this type difi'i'culties have been experiencedlin. the past arising from failure of the thyrat-ronto deionize as and when it should,
- a voltage divider which may be made up of resistances 20 and 2
- This may be a tube of the 6J5GT type and may have cathode 230, control electrode 239, and
- Cathode 23c maybe connected to ground through resistance 24 and the anodezaa voltage; also bleeder resistance 25 maybe connected from the source of plate; yoltage'to the cathode side of resistance 24.
- Front'and back contacts 26 and 2612 may be provided for relay 26, to be engaged by armature 26a and when the armature 26a is closed on front contact 26) 'a'circuit is established short-circuiting resistance" 21 the plate voltage upon this tube may be as high 3 as 5,000 volts.
- the voltage upon the anode-I Ia may drop to as low as volts, but under certain conditions the thyratron may not de-ionize because a suflicient flow of plate current stilloccurs; This must be reduced still further in orderto de-ionize the tube.
- the voltage upon the control electrode of tube 23 likewise drops to a very'low value in same ratio and this is made sufficient to cause tube 23 to cut 01T and therebyrelease armature 26a which may. be biased to back contact and; therefore, opens, removing the short-circuit around resistance 21 and inserting this resistance in series with power transformer primary I611.
- this resistance is so chosen that it limits the currentflowing through thyratron II to a value less than the critical value required to maintain ionization.
- the plate voltage rises As the plate voltage rises; the voltage upon the control electrode 23g'of tube 23 rises and this tube again'begins to pass current after the control electrode to cathodepotential goes above cutoff value,-whereupon space, current once more flows through this tube.
- Relay 26 is energized, armature 26a is moved to front contact 26], resistance, 21 short-circuited, and conditions return to normal'. Resistances and 2
- is made relatively high so that only 5 a-small portion of the plate voltage of the thyrai may be connected to one terminal of the-relay winding of relay 26, thence to a source ofplate g tron is applied to'the'tube 23.
- the tube 23 is operated at zero bias for high positive ;vo l tage on the grid, thereby promoting'uniformity toperation and protection.
- Capacity 22 is emoiplo'yed to eliminate the possibility of relay chatter-during normal operation of the thyratron I I where the ionization lasts for only a fraction of j, amillisecond.
- a storage element means for charging said element, a thyratron, having a cathode, a con- 5 trol electrode, and an anode, connected to said element for discharging the same, means for applying triggering impulses to a control electrode of said thyratron, and means operated by the potential difference between the cathode and ang ode of said thyratron and responsive to failure of said thyratron, to de-ionize after said storage element isdischarged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein.
- a storage circuit comprising capacity, a thyratron; having a cathode, a control electrode, and an anode, connected to said storage circuit for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potentialdiiference between the cathode and anode of said thyratron and responsive to failure of said thyratron to deionizev after said storage circuit is discharged, 5 ,for limiting the current through said thyratron aeeaeca to a value less than that required, to maintain ionization therein.
- an artificial line means for charging said artificial line, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering-impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratronandresponsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein.
- a pulse generating circuit in combination, an artificial line, means for charging said artificial line, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through saidthyratron to a value less than that required to maintain ionization therein, said last mentioned means comprising a relay and a control tube for operating said relay, said control tube being responsive to the plate voltage of said thyratron.
- a pulse generating circuit in combination, an artificial line, means for charging said artificial line, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difierence between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein, said last mentioned means comprising a short-circuited resistor in the current supply path for said thyratron and means for inserting said resistor in response to failure of said thyratron to de-ionize after discharge of said artificial line.
- an artificial line means for charging said artificial line, said means comprising a power source and a rectifier, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line through said thyratron to a value less than that required to maintain ionization therein.
- an artificial line means for charging said artificial line, said means comprising a power source and a rectifier and a resistance in series with said power source, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difierence between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial is discharged, for limiting the current 6' a lineis discharged, for limiting the current throu h said thyratron to a value less than that required to maintain ionization therein, said means comprisinga relay arranged to short out saidxresistance during normal operation and to insertsaid resistance upon failure of said thyratron ito de-ionize after said artificial line is discharged.
- an artificial line means for charging said artificial line, said means comprising a power source and a rectifier, and a resistance in series with said power source, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through saidthyratron to a value less than that required to maintain ionization therein, said means comprising a relay for short circuiting said resistance during normal operation, and a control tube responsive to the plate voltage of said thyratron for operating said relay.
- an artificial line means for charging said artificial line, said means comprising a transformer and a rectifier and a protective resistance in series with the primary of said transformer, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, means operated by the potential difierence between the cathode and anode of said thyratron and responsive to failure of said thyratron to deionize after said artificial line is discharged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein, said last mentioned means comprising a relay for short circuiting said protective resistance, a control tube arranged to energiZe said relay to short circuit said protective resistance when the plate potential of said thyratron exceeds a predetermined value, and a voltage divider connected to the plate of said said
- a thyratron protecting circuit in combination, a thyratron, having a cathode, a control electrode, and an anode, a power supply for said thyratron, a protective resistance in the circuit supplying current to said thyratron, a voltage divider connected between cathode and anode of said thyratron, a control tube, a connection for applying a portion of the voltage of said voltage divider to said control tube, and a relay in the output circuit of said control tube for short circuiting said protective resistance, said age across said voltage divider upon said con trol tube, and a relay in the output circuit 01 REFERENCES CITED said control tube, the constants of said control The following e er es are 0! reco in tube and its associated circuits being so chosen file Of this P te t:
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- Generation Of Surge Voltage And Current (AREA)
Description
April 1948- E. D. BURLINGAME ET AL 38,962
PROTECTION OF THYRATRON IN IMPULSE GENERATING CIRCUITS Filed Aug. 7, 1944 ww J y \J. o a mfi m. m mm as a w e71 s75 r CAVR Z0 0 X. 3% 5 huwwNvw a w\ Rmwmvh w m; .w P} n 30 Q 250 5% l Patented Apr. 6, 1948 Ernest ne Barnu Egg ertsvillfe mime w; Carlson, Depe'm Mfldison'wGi Snyder, andimamll 0. sum; Lama a;
assignom to; Goioniai; R adioiiffommflomhllut falo, N. Y.
This invention; reiatesttolthyratronpulse generating circuits and more.particularlitb cireuits; of the type described employing an artificialjline; discharging v through a. thyratron in" response to:
partieularity in the i appended claims: our-mun ve uen itseir; howeveri both as -to its prineipl arrdf vto* its particular: embodiments, will understood referring to the specifleatiom tri gering impulses upon the controrelectrode of accompanying drawing-on which the singleiflwei the thyratron.
In circuits" of this type difi'i'culties have been experiencedlin. the past arising from failure of the thyrat-ronto deionize as and when it should,
isa cirpuikdiagram of apparatus-in aeeordanc'e witl'i oin-1i'nyerrtion.
Referring npwvmore particularly to-tiiesdi'we ing;; trig ;gering impulsesefi'om ;a sourcenot sliowm i. e., immediatelyyafterdischarging-tire; artificial 0: 01" descrilied' and not necesser ror: the untler line. This may cause failure of the apparatus and evenitsudestructionh 'lfhejeasonlfor this-is that the increase, in current over andjabflve the. normal operating, current may, not" be ufl j ien to operatel lmtectille devices-such asrusesoncircult breakers, .butf is" us ally sufilcient; ,ifitic'ontinues, for, any length. oftime',,to burnoutithe powertransformer. 7.
Moreover, even, if j the. current dDes not: cause standing-or"our-invention; areimpressedtlirouili: transformer I II"; which mayhave pflmairywi-n' s. I mg; I flux and secondary winding IUD";- coirtrol; circuit of tube oi the thyratron= V 111*; 'I liis' tiirie-maiyehave a cfiitm IIcr-controlelectrode l 'lig and anode Hm Itixe. catl iod'ejmay-s be connected? to ground andi itSi rid through seeond'ary'win'ding loo -or; transit former III and tlirougl i a -suitable source; of fume failure of operating, parts; such" a: condition must? and potential? 9 to g-round'z' Tlie'i anodes be avoided; because while itremains tIieLap a ratus is unable to function normall'yfl: ez, to'dee liver pulses by discharging the artificial line" in response totriggeringimpulses;
It is amobje twf this. invention-to provide-am maticall y indieated as= resistance Iiitoiigr'oundfiaaizl paratus of a class described-fin whicliide=ioniZation of the tl'iyratron will take plaee unfailingiy at the completion" of -the -discharge of tlie-artifi I cialline or within a predetermined? time-- after" completion thereof, should de-ionizati'onnottairea serilied' in detaili Theilineimay be clrarge from:
place.
It is a: further object ofthis-invention-to provide acircuit" of the" class described which will? not be destroyed or. rendered'inoperative should= I Iii anayrbercormected to th e inputof the-artificial: line I2made uppfiinductancewlls and capacities I'l The commonterm-inal'l ofiali capacitiessmay be' 'connected tliroughtheoutput load diagra;
tlrougli inim yscases this may bezartransiormen.
Sinee-ttie -design-and' oonstruetion of artiiiciaii. lines lravir'rg -anyparticular characteristics weiii unclerstood it the art,- I this is noti showmor adezwpowerisource; not shown through powertriatermeri' I ti-liavina primary windings IBwrarrdis ondaryewinding I 61) 1 through: rectifierz, I I msw svemmae l mandamus-2| laiandsthroug'n;
normal tie-ionizationof thethyratron' not occur-e ch ifie re istance I9: to the-2 artificial! line?! 1 after completion OfthGdi'SlfiBlgGi- It is still a-iurther-obiect of this: invention to: provide apparatus ofthe class-dscribed'whicin is simple and economical to"construct" and" i ailing in operation;
It is-still further an object of this'dnventiomtmprovide a circuit of the class described whieli wiiiautomaticallyreset itself "tonormal conditio'ns upon operation of the protective devicez Flltercondenser l 8"may:beiprovidedifronr cathodes I "Ie -tMgroundi In =normali'operation :tlrestriggere ingaimpulse impressed umn magma :otzth'e: tubes: I i is irfiicient to cause ionization: and tliusz: toe: 1; perm-ittliedisoharge of theiartifi'eial iline through; the -tube lii As wiil 'rbeunclerstoedgt the duratiom am amplitude 0r thecurrent 1pui$e derived ifroma. the artifieial lines iss-controliedibysrtheiconsti'ust ents -thereoffand is independentfotitl're amzplitude It is still i a I further object of this invention to ueanddumtlon of tiie; triggering-impulses;
provide a circuit of the-=class= described; embodying; a relay whicli will operate toflimit tfie cur-*- rent flow should: normal de-ionizatiorr or thethyratronnot take place ami in wlricli' -the op th e thyratron ls de ioni-zeari thei plate-a voltage may be asi high:ass5',0001rvolts;v butrwhex ri tlie tliyratrorr is ionizewithis;.voltageimayz'droptasi low 'as lfi -ivoitssbut this'emay be insuifibientzxtet eration of therelay-isdefinitely certaim andeen I causes de lonizati an-x on the? thyratrorr's after? the? tireiy free from chatter:-
Still other obj este and ada rantagesor our: in vention will hie-apparent fromihe specifieationst The '--features of IIOVBltYEsWhiCh "we believe to be lineman; discharged-:3. If :thislwhapperis; .theihwrw tron will remain ionized and will be unresponsive tottiriggeringrimpulses wd:2thercontinuemflowsof heavy; current ahcvea; arms-1' beyond? that arequiztedst characteristic of our invention are set fortlr witli- 55abymormalicperatlemxmay'resuit in burningiouti the power transformer I6. To prevent this we provide a voltage divider which may be made up of resistances 20 and 2| connected from the anode I la to ground. Resistance 2| may be shunted by condenser 22 and the voltage drop across resistance 2| may-be impressed upon the relay tube 23." This may be a tube of the 6J5GT type and may have cathode 230, control electrode 239, and
current drawn by the grid of tube 23 is kept down to a reasonable value, say a fraction of a milliampere. Also, the ratio of resistance 20 to resistance 2| is made relatively high so that only 5 a-small portion of the plate voltage of the thyrai may be connected to one terminal of the-relay winding of relay 26, thence to a source ofplate g tron is applied to'the'tube 23. Preferably the tube 23 is operated at zero bias for high positive ;vo l tage on the grid, thereby promoting'uniformity toperation and protection. Capacity 22 is emoiplo'yed to eliminate the possibility of relay chatter-during normal operation of the thyratron I I where the ionization lasts for only a fraction of j, amillisecond.
, ,ii? .J-In order to complete the disclosure herein, but 5 not-byway o flirni'tation, the following values are given:
ResistanceI9; ';;;"20,000 Ohms 7 Resistance, 6' Megohms Resistance 2| 0.47 Megohm Resistance 24 3,300 Ohms Resistance 25 27,000v Ohms Resistance 21 a 400 Ohms Inductance I3 5 Microhenries 0.002 Microfarads (eitcept the terminating ca- 5 a ac y pacity which is Y. 0.004) Capacity I8 1 Microfarad Capacity 22 0.1 ..Microfarad The artificial line employed has a characteristic impedance Z0 equals50 ohms. Electrical length equals one millisecond. Outputpulse length equals 2 milliseconds. 'While We have shownand described certain preferred embodiments of our invention, it will be apparent that modifications and changes may be made without departing from the spirit and scope of our, invention, as will be clear tothose' skilled in the art.
In the specification we have explained the principles of our invention and the best mode in.
;WhiCh we have contemplated applying those prin- 59;;vention or discovery.
ciples, so, as to distinguish our invention from other inventions; and we have particularly pointedout and distinctly claimed the part, improvement, or combination which we claim as our in- We claim:
1. In a pulse generating circuit, in combina tion, a storage element, means for charging said element, a thyratron, having a cathode, a con- 5 trol electrode, and an anode, connected to said element for discharging the same, means for applying triggering impulses to a control electrode of said thyratron, and means operated by the potential difference between the cathode and ang ode of said thyratron and responsive to failure of said thyratron, to de-ionize after said storage element isdischarged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein.
2. In a pulse generating circuit, in combination, a storage circuit comprising capacity, a thyratron; having a cathode, a control electrode, and an anode, connected to said storage circuit for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potentialdiiference between the cathode and anode of said thyratron and responsive to failure of said thyratron to deionizev after said storage circuit is discharged, 5 ,for limiting the current through said thyratron aeeaeca to a value less than that required, to maintain ionization therein.
3. In a pulse generating circuit, in combination, an artificial line, means for charging said artificial line, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering-impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratronandresponsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein.
4. In a pulse generating circuit, in combination, an artificial line, means for charging said artificial line, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through saidthyratron to a value less than that required to maintain ionization therein, said last mentioned means comprising a relay and a control tube for operating said relay, said control tube being responsive to the plate voltage of said thyratron.
5. In a pulse generating circuit, in combination, an artificial line, means for charging said artificial line, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difierence between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein, said last mentioned means comprising a short-circuited resistor in the current supply path for said thyratron and means for inserting said resistor in response to failure of said thyratron to de-ionize after discharge of said artificial line.
6. In a pulse generating circuit, in combination, an artificial line, means for charging said artificial line, said means comprising a power source and a rectifier, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line through said thyratron to a value less than that required to maintain ionization therein.
7. In a pulse generating circuit, in combination, an artificial line, means for charging said artificial line, said means comprising a power source and a rectifier and a resistance in series with said power source, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difierence between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial is discharged, for limiting the current 6' a lineis discharged, for limiting the current throu h said thyratron to a value less than that required to maintain ionization therein, said means comprisinga relay arranged to short out saidxresistance during normal operation and to insertsaid resistance upon failure of said thyratron ito de-ionize after said artificial line is discharged.
8. Ina pulse generating circuit, in combinaton, an artificial line, means for charging said artificial line, said means comprising a power source and a rectifier, and a resistance in series with said power source, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, and means operated by the potential difference between the cathode and anode of said thyratron and responsive to failure of said thyratron to de-ionize after said artificial line is discharged, for limiting the current through saidthyratron to a value less than that required to maintain ionization therein, said means comprising a relay for short circuiting said resistance during normal operation, and a control tube responsive to the plate voltage of said thyratron for operating said relay.
9. In a pulse generating circuit, in combination, an artificial line, means for charging said artificial line, said means comprising a transformer and a rectifier and a protective resistance in series with the primary of said transformer, a thyratron, having a cathode, a control electrode, and an anode, connected to said artificial line for discharging the same, means for applying triggering impulses to said control electrode, means operated by the potential difierence between the cathode and anode of said thyratron and responsive to failure of said thyratron to deionize after said artificial line is discharged, for limiting the current through said thyratron to a value less than that required to maintain ionization therein, said last mentioned means comprising a relay for short circuiting said protective resistance, a control tube arranged to energiZe said relay to short circuit said protective resistance when the plate potential of said thyratron exceeds a predetermined value, and a voltage divider connected to the plate of said thyratron for applying to said control tube a portion of the plate voltage of said thyratron.
10. In a thyratron protecting circuit, in combination, a thyratron, having a cathode, a control electrode, and an anode, a power supply for said thyratron, a protective resistance in the circuit supplying current to said thyratron, a voltage divider connected between cathode and anode of said thyratron, a control tube, a connection for applying a portion of the voltage of said voltage divider to said control tube, and a relay in the output circuit of said control tube for short circuiting said protective resistance, said age across said voltage divider upon said con trol tube, and a relay in the output circuit 01 REFERENCES CITED said control tube, the constants of said control The following e er es are 0! reco in tube and its associated circuits being so chosen file Of this P te t:
that said protective resistance short circuited 5 UNITED STATES PATENTS for values of plate voltages of said thyratron exceeding a predetermined value and in circuit for Number Name te values less than said predetermined value. 3 5 Foulke July 1934 ERNEST BURLINGAME 2,088,548 Chauveau July 2'7; 1937 ROBERT CARLSON. v 10 2,102,951 Hackenberg Dec. 21, 1937 M DI N NICHOLSON, JR, 2,282,108 W mann Ma-y5. 1942 MAXWELL C. SCOTT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US548460A US2438962A (en) | 1944-08-07 | 1944-08-07 | Protection of thyratron in impulse generating circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US548460A US2438962A (en) | 1944-08-07 | 1944-08-07 | Protection of thyratron in impulse generating circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2438962A true US2438962A (en) | 1948-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US548460A Expired - Lifetime US2438962A (en) | 1944-08-07 | 1944-08-07 | Protection of thyratron in impulse generating circuits |
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| US (1) | US2438962A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2644130A (en) * | 1949-01-24 | 1953-06-30 | Socony Vacuum Oil Co Inc | Square wave pulse generating system |
| US2659008A (en) * | 1951-09-11 | 1953-11-10 | Gen Electric | Electronic control circuit |
| US2677053A (en) * | 1949-06-29 | 1954-04-27 | Westinghouse Electric Corp | Pulse generator |
| US2690302A (en) * | 1951-04-03 | 1954-09-28 | Marchant Calculators Inc | Counter |
| US2764684A (en) * | 1950-12-04 | 1956-09-25 | Gen Electric | Electronic control circuit |
| US2782867A (en) * | 1952-09-03 | 1957-02-26 | Research Corp | Pulser circuit |
| DE1017659B (en) * | 1952-12-04 | 1957-10-17 | Siemens Ag | Circuit arrangement for achieving high pulse powers with a given tube type and limited anode voltage |
| US2815445A (en) * | 1953-01-16 | 1957-12-03 | Hughes Aircraft Co | Protective circuit for electron discharge devices |
| US2830199A (en) * | 1954-11-30 | 1958-04-08 | Raytheon Mfg Co | Pulse generating circuits |
| US2990539A (en) * | 1955-05-25 | 1961-06-27 | Ibm | Transistor amplifiers |
| US2997663A (en) * | 1951-11-15 | 1961-08-22 | Bell Telephone Labor Inc | Regulated power supply |
| US3078418A (en) * | 1961-01-23 | 1963-02-19 | Ling Temco Vought Inc | High power pulse type modulator employing vacuum tube to divert current for ignitrondeionization |
| US3322975A (en) * | 1964-06-09 | 1967-05-30 | William I Smith | Non-linear end-of-line clipper circuit for pulsers |
| US3405321A (en) * | 1966-09-07 | 1968-10-08 | Navy Usa | Solid state magnetron modulator mismatch protective circuit |
| US3423595A (en) * | 1965-08-30 | 1969-01-21 | Trw Inc | High speed modulator for electronic shutter |
| US3449635A (en) * | 1967-08-21 | 1969-06-10 | Us Navy | Transmitter overload protection circuit |
| US3539871A (en) * | 1969-01-15 | 1970-11-10 | Us Army | Circuit protecting,gas-tube,discharge interrupter |
| US3539870A (en) * | 1969-01-15 | 1970-11-10 | Us Army | Vacuum tube isolator,circuit protector,and voltage regulator |
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| US1965589A (en) * | 1932-10-11 | 1934-07-10 | Gen Electric Vapor Lamp Co | Gaseous electric discharge device and method of making the same |
| US2088548A (en) * | 1934-10-02 | 1937-07-27 | Csf | Gas discharge relay |
| US2102951A (en) * | 1935-07-11 | 1937-12-21 | Lorenz C Ag | Generator of electric relaxation oscillations |
| US2282108A (en) * | 1940-11-20 | 1942-05-05 | Ibm | Time delay circuit |
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- 1944-08-07 US US548460A patent/US2438962A/en not_active Expired - Lifetime
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|---|---|---|---|---|
| US1965589A (en) * | 1932-10-11 | 1934-07-10 | Gen Electric Vapor Lamp Co | Gaseous electric discharge device and method of making the same |
| US2088548A (en) * | 1934-10-02 | 1937-07-27 | Csf | Gas discharge relay |
| US2102951A (en) * | 1935-07-11 | 1937-12-21 | Lorenz C Ag | Generator of electric relaxation oscillations |
| US2282108A (en) * | 1940-11-20 | 1942-05-05 | Ibm | Time delay circuit |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2644130A (en) * | 1949-01-24 | 1953-06-30 | Socony Vacuum Oil Co Inc | Square wave pulse generating system |
| US2677053A (en) * | 1949-06-29 | 1954-04-27 | Westinghouse Electric Corp | Pulse generator |
| US2764684A (en) * | 1950-12-04 | 1956-09-25 | Gen Electric | Electronic control circuit |
| US2690302A (en) * | 1951-04-03 | 1954-09-28 | Marchant Calculators Inc | Counter |
| US2659008A (en) * | 1951-09-11 | 1953-11-10 | Gen Electric | Electronic control circuit |
| US2997663A (en) * | 1951-11-15 | 1961-08-22 | Bell Telephone Labor Inc | Regulated power supply |
| US2782867A (en) * | 1952-09-03 | 1957-02-26 | Research Corp | Pulser circuit |
| DE1017659B (en) * | 1952-12-04 | 1957-10-17 | Siemens Ag | Circuit arrangement for achieving high pulse powers with a given tube type and limited anode voltage |
| US2815445A (en) * | 1953-01-16 | 1957-12-03 | Hughes Aircraft Co | Protective circuit for electron discharge devices |
| US2830199A (en) * | 1954-11-30 | 1958-04-08 | Raytheon Mfg Co | Pulse generating circuits |
| US2990539A (en) * | 1955-05-25 | 1961-06-27 | Ibm | Transistor amplifiers |
| US3078418A (en) * | 1961-01-23 | 1963-02-19 | Ling Temco Vought Inc | High power pulse type modulator employing vacuum tube to divert current for ignitrondeionization |
| US3322975A (en) * | 1964-06-09 | 1967-05-30 | William I Smith | Non-linear end-of-line clipper circuit for pulsers |
| US3423595A (en) * | 1965-08-30 | 1969-01-21 | Trw Inc | High speed modulator for electronic shutter |
| US3405321A (en) * | 1966-09-07 | 1968-10-08 | Navy Usa | Solid state magnetron modulator mismatch protective circuit |
| US3449635A (en) * | 1967-08-21 | 1969-06-10 | Us Navy | Transmitter overload protection circuit |
| US3539871A (en) * | 1969-01-15 | 1970-11-10 | Us Army | Circuit protecting,gas-tube,discharge interrupter |
| US3539870A (en) * | 1969-01-15 | 1970-11-10 | Us Army | Vacuum tube isolator,circuit protector,and voltage regulator |
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