US2412485A - Saw-tooth voltage generator - Google Patents

Saw-tooth voltage generator Download PDF

Info

Publication number
US2412485A
US2412485A US474777A US47477743A US2412485A US 2412485 A US2412485 A US 2412485A US 474777 A US474777 A US 474777A US 47477743 A US47477743 A US 47477743A US 2412485 A US2412485 A US 2412485A
Authority
US
United States
Prior art keywords
potential
anode
grid
condenser
resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US474777A
Other languages
English (en)
Inventor
Whiteley Joseph William
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AC Cossor Ltd
Original Assignee
AC Cossor Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AC Cossor Ltd filed Critical AC Cossor Ltd
Application granted granted Critical
Publication of US2412485A publication Critical patent/US2412485A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H03K4/20—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator
    • H03K4/22—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator combined with transitron, e.g. phantastron, sanatron
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements
    • G06G7/186—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements using an operational amplifier comprising a capacitor or a resistor in the feedback loop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H03K4/20—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator

Definitions

  • This invention relates to electric circuits in which either, a) the instantaneous rate of change of output voltage is substantially proportional to an applied voltage, or (b) the instantaneous output voltage is substantially proportional to the rate of change of an applied voltage.
  • Circuits of type (a) will be denoted integrating circuits and circuits of type (b) will be denoted differentiating circuits.
  • the apparatus accordin to the invention for these purposes comprises a thermionic valve amplifier and a feed-back path whereby the output voltage of said amplifier is fed back through a time-constant network in degenerative sense into the input circuit of said amplifier.
  • the timeconstant network in the feed-back path will be of the difierentiating type.
  • the timeconstant network in the feed-back path will be of the integrating type.
  • the invention is particularly applicable to the special purpose which consists in the integration, for limited periods, of constant voltages; this is to say, the production of voltages which vary substantially linearly with time.
  • Circuits for this purpose are commonly snown as linear sawtooth time-base voltage generators, or linear saw-tooth voltage sweep generators.
  • a substantially linear saw-tooth voltage sweep generator comprises a thermionic valve, an anode load connected between the anode and a point of highly positive fixed potential, a resistance connected between the control grid and a point of constant potential remote from cathode potential, a condenser connected betwen anode and control grid. and means to establish an initial potential difference across said condenser widely difierent from the potential difference which is ultimately obtained if said means are rendered inoperative.
  • FIG. 1 represents single-valve timebase circuits requiring external means for producing fiyback
  • Figure 3 represents a general differentiating circuit
  • Figure 4 represents a general integrating circuit
  • Figure 5 shows a single-valve saw-tooth time-base circuit which can be adjusted to be self-running.
  • the generator represented in Figure l is shown as employing a pentode valve I, and having its suppressor and screen grids conventionally connected respectively to cathode and to a point of positive fixed potential which is indicated by letter A on a potentiometer or other voltage source.
  • All anode load shown as comprising resistance 2 in parallel with capacitance 3, is conventionally connected between the anode and a point of highly positive fixed potential, indicated at 1B.
  • the output voltage is developed across this anode load, which may, if desired, consist only of the circuit across which the generated time-base voltage is to be applied.
  • the capacitance 3 may comprise the deflector plate capacitance of a cathode ray tube plus the stray anode capacitance of valve l.
  • a resistance 4 is connected between the control grid and a point of positive constant potential, preferably of high value.
  • point B may conveniently be the same point as shown in the drawing. If the anode current supply to point B is derived from an altemating source through a conventional rectifier and smoothing system, it is desirable that additional means be employed to maintain constant the potential of point B.
  • a condenser 5 is connected, which together with resistance 4 forms a. time-constant network through which the voltage developed across the anode loadis fed back. in degener zive sense to the control grid.
  • the voltage deveoped across resistance 4, which is thus applied in the grid circuit, is
  • Condenser will now discharge steadily through resistance 4 and through the valve I.
  • the anode current and grid voltage will be related throughout this discharge according to the characteristics of the valve.
  • the anode potential will sweep downwards, varying substantially linearly with time, while the control grid potential sweeps upwards within the grid base of the valve.
  • the discharge may be continued until the control grid voltage approaches close to the value at which grid current will begin to flow.
  • the anode potential will then have fallen to within a few volts of cathode potential.
  • the cycle may be repeated.
  • the generator represented in Figure 2 is generally similar to that in Figure 1 but has the resistance 4 connected between the control grid and a point of negative constant potential, preferably of highly negative value, which is indicated at Y.
  • the voltages across condenser 5 will tend to increase at a substantially constant rate towards a high value, and the initial voltage which it is necessary to establish is therefore low. Consequently, switch 5 is arranged to connect the upper plate of condenser 5 to a point of low positive fixed potential, which is indicated at D. Assuming that condenser 5 has a high voltage charge at the time when switch 6 is closed, with the upper plate positive relative to the lower, it cannot be discharged by grid current in valve I. In
  • this potential should be slightly more negative than the cut-off potential of the control grid of valve I.
  • condenser 5 is discharged to a voltage approximately equal to the voltage between the points D and E. This voltage may be only a few volts greater than the grid base of the valve I.
  • Condenser 5 will now steadily charge through resistance 4 and through the anode load.
  • the anode potential will sweep upwards, varying substantially linearly with time, while the control grid potential sweeps downwards within the grid base of the valve.
  • the discharge may be continued until the control rid voltage approaches close to the value at which anode current is cut ofi.
  • the cycle may be repeated.
  • the anode load resistance 2 must be sufiiciently low to pass the anode current for valve I together with the charging current for condenser 5.
  • the anode load resistance 2 may be raised to a very high value, because the anode current can be supplied by condenser 5.
  • the valve should have a high amplification factor
  • valve should have a high mutual conductance (this condition requires inter alia that the control grid potential shall not become so far negative as to approach closely to anode current cut-oil),
  • the pentode valve may have an amplification factor of 2,000 and a mutual conductance of 2 milliamps per volt.
  • the point B may be at 250 volts positive to cathode.
  • Resistance 0 may have a value of 100,000 ohms, while the capacitance 5 may be varied between 0.0001 and 0.1 microfarad.
  • the sweep amplitude which is determined by the interval between successive operations of switch 6, may be of the order of 240 volts when the applied voltage, as above stated, is 250 volts.
  • the rate of change of anode potential may be adjusted:
  • the signal to be differentiated is applied between terminals I3 and I4, the latter of which is connected directly to the point of fixzd zero potential, normally earth, indicated at In this circuit, in order to increase the amplification factor, and thus obtain a higher degree of accuracy in the differentiation, a multi-valve amplifier is shown.
  • the terminal I3 is connected through resistance 4 to the control grid of valve II.
  • the grid circuit of valve 2i should be substantially purely resistive. If the internal impedance of the signal source connected between terminals II and I4 is not substantially purely resistive, additional resistance may be added in series therewith. Resistance 4 represents the resistive component of the internal impedance plus any such additional resistance, and thus forms the resistive arm of the feed-back time-constant network.
  • and 22 are arranged as ordinary amplifiers with anode load resistors 24 and con- .ventional couplings comprising large blocking condensers i1 and grid leaks I8. Valves 2
  • the output load represented as in previous figures as resistance 2 in parallel with capacitance 3, is connected in the anode circuit of the last valve 23.
  • the output voltage developed across this anode load is fed back through a large blocking condenser l9 and then through an integrating time-constant network comprising inductance in series with said resistance 4 in the input circuit.
  • Pentode valves may be substituted for the triode valves 2!. 22, 23, if desired.
  • an integrating circuit is required instead of a differentiating circuit, this may be achieved by substituting a diflerentiating time-constant network for the integrating time-constant network.
  • a condenser giving, in conjunction with resistance 4, a suitable time-constant may be substituted for inductance 20, and then blocking condenser 19 is unnecessary.
  • the general integrating circuit represented by Figure 4 includes double compensation.
  • the valve I here shown as a pentode, is provided with a feed-back time-constant network comprising the condenser 5 and the resistance 4.
  • the potential difference across the resistance 4 is applied to the grid of the pentode, in series with the applied potential diflerence which is to be integrated and which is introduced between the input terminals l3, l4.
  • the terminal I4 is connected to a point H of fixed negative supply potential through a high resistance I5, so as to provide a suitable grid bias potential at the grid of valve I.
  • the terminal I4 is connected through a large blocking condenser Hi to the cathode of a cathode follower triode II so that the variations of potential across the cathode load I2 are reproduced at terminal l4.
  • the grid of the cathode follower triode is connected to the grid of the pentode I.
  • the function of the cathode follower in this arrangement is to provide, at terminal i4, variations of potential which are nearly equal to the variations of potential which appear at the grid of the pentode i, so that the potential difference across resistance 4 is very nearly equal to the potential difference applied between terminals 13 and i4. Under these circumstances, the current flowing through resistance 4 is nearly proportional to the applied potential difference and the variation of potential difference across condenser 5 is nearly proportional to the integral, with respect to time, of the applied potential difference.
  • Pentode I is provided with an anode load, comprising resistance 2 and capacitance 3, across which is developed an output potential variation substantially proportional to the time integral of the applied potential.
  • the generator represented in Figure 5 is generally similar to that of Figure 1 but has internal means for re-establishing a basic initial potential diirerence across condenser 5 at the completion of each voltage sweep. In Figure 5 this is eflected by cutting off, or nearly cutting on, the anode current of valve l. The resulting rise of anode potential is accompanied by the charging of condenser 5 through the anode load resistance 2 and by grid current.
  • the interruption of anode current is effected by an arrangement similar to that employed in a transitron oscillator.
  • the screen and suppressor grids are directly coupled together by condenser 8.
  • Impedance 9 is connected between the screen grid and a point A of appropriate high positive fixed potential.
  • Impedance Ill is connected between the suppressor grid and a point J of appropriate low positive or negative potential. and suppressor grids is desired at the end of each voltage sweep, followed by a sharp rise to initiate the next sweep.
  • the impedance between these grids and earth, offered to alternating currents should be substantially resistive.
  • the impedances 9 and In are both shown as resistors.
  • the circuit may be arranged to operate con-- tinuously, and so to provide a saw-tooth potential waveform across the anode load 2, 3.
  • the circuit may be arranged to remain quiescent until the arrival of a synchronising or tripping pulse, after which the anode potential will fall steadily to a minimum and then return rapidly to the original level.
  • the circuit functions as a single-stroke timebase generator.
  • synchronising pulses may, for example, be applied to the suppressor grid through a condenser.
  • the switch 6 may take the practical form of a mechanically driven commutator, or of an electrical discharge circuit employing a gas discharge triode or one or more high vacuum valves.
  • a discharge circuit may be designed to be self-operating when the anode reaches a predetermined potential, so that a self-running time-base generator is obtained.
  • it may be designed to operate in 'response to a signal to produce a single sweep, or in response to a succession of synchronising signals to produce a succession of sweeps.
  • valve I is shown in each of the figures as a pentode, it may be preferred in some arrangements according to the invention that a high-gain triode be employed.
  • a vacuum tube amplifier comprising at least a cathode, an anode. a first control grid near said cathode, a second control grid near said anode and a screen grid interposed between said first and second control grids.
  • input and output circuits including an anode load impedance and means to provide a relatively high steady positive bias potential upon said first control grid, to cause the anode potential to decrease from an initial high value to a low limit value, a feedback interconnecting said output and input circuits and including a condenser and a resistance in series to produce a potential upon said first grid during the sweep of the anode potential varying in accordance with the rate of change of the anode potential and being nearly A sharp fall of the potentials of the screen 7 equal to and applied in opposition to said grid bias potential, a condenser connected between said screen grid and said second control grid, a resistive load impedance connected to said screen grid and designed to produce asudden high negative potential upon said second control grid at the completion of the anode sweep whereby to raise the anode potential to its initial value.
  • a sweep voltage generator comprising an electron discharge tube having at least a cathode, an anode, a control grid, a screen grid, and a suppressor grid, an output load connected between said anode and cathode, an input circuit for said tube comprising a resistance having one end connected to said control grid and having its opposite end connected to a point of relatively high fixed positive potential remote from the range of grid operating potential for said tube to act as a voltage amplifier, a condenser connected between said control grid and a point of said output load, means for periodically interrupting the anode current of said tube comprising a further condenser connected between said screen grid and said suppressor grid, a resistance connected between said screen grid and a point of relatively high fixed potential and a further resistance connected between said suppressor grid and a point of relatively low fixed potential.
  • a sweep voltage producing means comprising a vacuum tube having a cathode, a grid and an anode, a source of direct current potential, means for connecting the negative terminal of said source to said cathode, means for connecting the positive terminal of said source through a resistance and condenser in parallel to said anode to normally bias said anode to a potential below the potential of said positive terminal, a further condenser connected between said anode and said grid, a further resistance connecting said grid with the positive terminal of said source,
  • a sweep voltage producing means comprising a vacuum tube having a cathode, a grid, and an anode, a source of direct current potential, means for connecting the negative terminal of said source to said cathode, means for connecting the positive terminal of said source through a resistance and condenser in parallel to said anode to bias said anode to a normal potential below the potential of the positive terminal of said source, a further condenser connected between said anode and said grid, a further resistance connecting said grid with the positive terminal of said source, and means for momentarily shortcircuiting said first-mentioned resistance.
  • a sweep voltage producing means comprising a vacuum tube having a cathode, a grid, and an anode, a source of direct current potential, means for connecting the negative terminal of said source to said cathode, means for connecting the positive terminal of said source through a resistance and condenser in parallel to said anode to bias said anode to a normal potential-below ill the potential of the positive terminal of said source, a further condenser connected between said anode and said grid, a further resistance connecting said grid with the positive terminal oi? said source, and means for momentarily interrupting the electron current within said tube to said anode.
  • a sweep voltage producing means comprising a vacuum tube having a cathode, a grid and an anode, a source of direct current potential, means for connecting the negative terminal oi. said source to said cathode, means for connecting said anode through a resistance and condenser in parallel to a positive potential point oi said source with respect to said cathode to bias said anode'to a normal potential below said positive potential point, a further condenser connected between said grid and a point of said resistance below said positive potential point, means for connecting said grid through a further resistance to a positive potential point 01' said source with respect to said cathode, and means for momentarily raising the potential of said anode to a value above said normal potential.
  • a sweep voltage producing means comprising a vacuum tube having a cathode, a grid and an anode, a source of direct current potential, means for connecting the negative terminal of said source to said cathode, a condenser connected between said anode and said grid, means for connecting said anode through a resistance and a further condenser in parallel to a positive potential point of said source with respect to said cathode to bias said anode to a normal potential I below said positive potential point, said further .condenser having a capacity 01' an order not excessively large in comparison with the capacity of said first condenser, means for connecting said grid through a further resistance to a positive potential point of said source with respect to said cathode, and further means for momentarily raising the potential of said anode to a value above said normal potential.
  • a sweep voltage producing means comprising a vacuum tube having a cathode, a control grid, a screen grid, a suppressor grid, and an anode, a source of direct current potential, means for connecting the negative terminal of said source to said cathode, means for connecting said suppressor grid to said cathode, further means for connecting the screen grid to a point of posi-- tive potential of said source with respect to said cathode, a condenser connected between said anode and said control grid, means for connecting said anode through a resistance and a further condenser in parallel to a positive potential point of said source with respect to said cathode to bias said anode to a normal'potential below said positive potential point, means for connecting said control grid through a further resistance to a point of positive potential of said source with respect to said cathode, and means for momentarily raising the potential of said anode to a value above said normal potential.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Lasers (AREA)
  • Amplifiers (AREA)
  • Particle Accelerators (AREA)
US474777A 1942-02-17 1943-02-05 Saw-tooth voltage generator Expired - Lifetime US2412485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2100/42A GB575250A (en) 1942-02-17 1942-02-17 Improvements relating to thermionic amplifying and generating circuits

Publications (1)

Publication Number Publication Date
US2412485A true US2412485A (en) 1946-12-10

Family

ID=9733593

Family Applications (1)

Application Number Title Priority Date Filing Date
US474777A Expired - Lifetime US2412485A (en) 1942-02-17 1943-02-05 Saw-tooth voltage generator

Country Status (4)

Country Link
US (1) US2412485A (enrdf_load_stackoverflow)
BE (1) BE481371A (enrdf_load_stackoverflow)
DE (1) DE826007C (enrdf_load_stackoverflow)
GB (2) GB481371A (enrdf_load_stackoverflow)

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455618A (en) * 1945-01-10 1948-12-07 Remco Electronic Inc Damping follow-up mechanism by degenerative derivative
US2467699A (en) * 1944-10-09 1949-04-19 Mullard Radio Valve Co Ltd Electric time base circuits
US2495072A (en) * 1949-01-03 1950-01-17 Nat Technical Lab Vacuum tube circuit
US2494865A (en) * 1944-05-04 1950-01-17 Cossor Ltd A C Triggered electronic sweep generator
US2506124A (en) * 1944-03-28 1950-05-02 Emi Ltd Circuit arrangement for indicating the duration of electrical pulses
US2525046A (en) * 1945-03-29 1950-10-10 Allis Chalmers Mfg Co Frequency measuring device
US2527342A (en) * 1943-12-18 1950-10-24 Emi Ltd Multivibrator and integrating circuit combination
US2532534A (en) * 1946-06-21 1950-12-05 Jr Persa R Bell Sweep-voltage generator circuit
US2541230A (en) * 1945-01-25 1951-02-13 Cossor Ltd A C Oscillation generator
US2542160A (en) * 1948-02-28 1951-02-20 Boeing Co Electronic integrating circuit
US2548532A (en) * 1945-09-29 1951-04-10 Bendix Aviat Corp Circuit for the generation of a linearly varying current
US2549873A (en) * 1944-09-01 1951-04-24 Williams Frederic Calland Thermionic valve circuits
US2549874A (en) * 1943-06-25 1951-04-24 Williams Frederic Calland Electronic relay circuit arrangement
US2549875A (en) * 1944-08-22 1951-04-24 Williams Frederic Calland Thermionic valve circuits
US2555837A (en) * 1945-03-30 1951-06-05 Williams Frederic Calland Time base circuit arrangement
US2556179A (en) * 1946-03-02 1951-06-12 Int Standard Electric Corp Multiple pulse producing system
US2562792A (en) * 1945-11-28 1951-07-31 Emi Ltd Circuits for modifying potentials
US2573970A (en) * 1946-02-19 1951-11-06 Hinckley Garfield Louis Cathode-ray tube time-base circuit
US2582490A (en) * 1949-09-02 1952-01-15 Gen Electric Co Ltd Thermionic valve integrating circuit
US2583587A (en) * 1947-08-06 1952-01-29 Milsom Frederick Roger Electric integrating circuit
US2584882A (en) * 1944-12-20 1952-02-05 Emi Ltd Integrating circuits
US2585803A (en) * 1945-04-18 1952-02-12 Us Sec War Pulse width discriminator circuit
US2591810A (en) * 1948-09-25 1952-04-08 Rca Corp Electrical time-delay network
US2594104A (en) * 1943-12-16 1952-04-22 Us Navy Linear sweep circuits
US2597214A (en) * 1945-11-30 1952-05-20 Us Navy Pip selector
US2612604A (en) * 1948-02-25 1952-09-30 Gen Electric Electronic time delay circuit
US2642532A (en) * 1949-09-30 1953-06-16 Raytheon Mfg Co Electron discharge circuits
US2651719A (en) * 1944-01-12 1953-09-08 Emi Ltd Circuits for modifying potentials
US2654839A (en) * 1949-02-24 1953-10-06 Lyman R Spaulding Electric pulse generator
US2661421A (en) * 1950-06-28 1953-12-01 Du Mont Allen B Lab Inc Sweep generator protection circuit
US2662197A (en) * 1948-04-06 1953-12-08 Hartford Nat Bank & Trust Co Saw tooth voltage generator
US2675469A (en) * 1947-02-18 1954-04-13 Emi Ltd Integrating circuit arrangement
US2675471A (en) * 1950-04-13 1954-04-13 Gen Electric Integrating circuit
US2681411A (en) * 1943-12-16 1954-06-15 Us Navy Linear sweep circuits
US2684442A (en) * 1951-07-31 1954-07-20 Rca Corp Multivibrator
US2692334A (en) * 1942-06-05 1954-10-19 Emi Ltd Electrical circuit arrangement for effecting integration and applications thereof
US2703203A (en) * 1946-02-21 1955-03-01 Amasa S Bishop Computer
US2755385A (en) * 1953-03-27 1956-07-17 John R Parsons Pulsing oscillator
US2764690A (en) * 1954-05-11 1956-09-25 Joseph F Brumbaugh Low frequency triangular waveform generator
US2775694A (en) * 1942-06-05 1956-12-25 Emi Ltd Electrical circuit arrangements for effecting integration and applications thereof
US2814760A (en) * 1955-04-14 1957-11-26 Raytheon Mfg Co Sweep circuits
US2871357A (en) * 1957-01-18 1959-01-27 Gen Electric Saw-tooth wave generator
US2905817A (en) * 1955-09-09 1959-09-22 Westinghouse Electric Corp Sweep generator
US2924787A (en) * 1956-12-06 1960-02-09 Albert R Diem Oscillator
US2926309A (en) * 1955-10-04 1960-02-23 Itt Screen grid amplifier
US2961610A (en) * 1949-08-18 1960-11-22 Hans H Hosenthien Reflected nonlinear modulators in alternating current electrical analog computers
US3054099A (en) * 1945-12-11 1962-09-11 Erwin R Gaerttner Beacon distress signal

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891093C (de) * 1950-11-03 1953-09-24 Philips Patentverwaltung Schaltungsanordnung fuer Kippspannungsgeneratoren
DE956856C (de) * 1953-02-17 1957-01-24 Kieler Howaldtswerke Ag Schaltungsanordnung zur Verstaerkung von hochfrequenten Spannungen und Video-Impulsen
DE1025007B (de) * 1954-12-23 1958-02-27 Wilhelm Altrogge Dr Ing Verfahren zum Verstaerken und Verbreitern von Impulsen kuerzester Dauer, insbesondere photoelektrischen Impulsen, und Schaltungsanordnung zur Durchfuehrung des Verfahrens

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775694A (en) * 1942-06-05 1956-12-25 Emi Ltd Electrical circuit arrangements for effecting integration and applications thereof
US2692334A (en) * 1942-06-05 1954-10-19 Emi Ltd Electrical circuit arrangement for effecting integration and applications thereof
US2549874A (en) * 1943-06-25 1951-04-24 Williams Frederic Calland Electronic relay circuit arrangement
US2681411A (en) * 1943-12-16 1954-06-15 Us Navy Linear sweep circuits
US2594104A (en) * 1943-12-16 1952-04-22 Us Navy Linear sweep circuits
US2527342A (en) * 1943-12-18 1950-10-24 Emi Ltd Multivibrator and integrating circuit combination
US2651719A (en) * 1944-01-12 1953-09-08 Emi Ltd Circuits for modifying potentials
US2506124A (en) * 1944-03-28 1950-05-02 Emi Ltd Circuit arrangement for indicating the duration of electrical pulses
US2494865A (en) * 1944-05-04 1950-01-17 Cossor Ltd A C Triggered electronic sweep generator
US2549875A (en) * 1944-08-22 1951-04-24 Williams Frederic Calland Thermionic valve circuits
US2549873A (en) * 1944-09-01 1951-04-24 Williams Frederic Calland Thermionic valve circuits
US2467699A (en) * 1944-10-09 1949-04-19 Mullard Radio Valve Co Ltd Electric time base circuits
US2584882A (en) * 1944-12-20 1952-02-05 Emi Ltd Integrating circuits
US2455618A (en) * 1945-01-10 1948-12-07 Remco Electronic Inc Damping follow-up mechanism by degenerative derivative
US2541230A (en) * 1945-01-25 1951-02-13 Cossor Ltd A C Oscillation generator
US2525046A (en) * 1945-03-29 1950-10-10 Allis Chalmers Mfg Co Frequency measuring device
US2555837A (en) * 1945-03-30 1951-06-05 Williams Frederic Calland Time base circuit arrangement
US2585803A (en) * 1945-04-18 1952-02-12 Us Sec War Pulse width discriminator circuit
US2548532A (en) * 1945-09-29 1951-04-10 Bendix Aviat Corp Circuit for the generation of a linearly varying current
US2562792A (en) * 1945-11-28 1951-07-31 Emi Ltd Circuits for modifying potentials
US2597214A (en) * 1945-11-30 1952-05-20 Us Navy Pip selector
US3054099A (en) * 1945-12-11 1962-09-11 Erwin R Gaerttner Beacon distress signal
US2573970A (en) * 1946-02-19 1951-11-06 Hinckley Garfield Louis Cathode-ray tube time-base circuit
US2703203A (en) * 1946-02-21 1955-03-01 Amasa S Bishop Computer
US2556179A (en) * 1946-03-02 1951-06-12 Int Standard Electric Corp Multiple pulse producing system
US2532534A (en) * 1946-06-21 1950-12-05 Jr Persa R Bell Sweep-voltage generator circuit
US2675469A (en) * 1947-02-18 1954-04-13 Emi Ltd Integrating circuit arrangement
US2583587A (en) * 1947-08-06 1952-01-29 Milsom Frederick Roger Electric integrating circuit
US2612604A (en) * 1948-02-25 1952-09-30 Gen Electric Electronic time delay circuit
US2542160A (en) * 1948-02-28 1951-02-20 Boeing Co Electronic integrating circuit
US2662197A (en) * 1948-04-06 1953-12-08 Hartford Nat Bank & Trust Co Saw tooth voltage generator
US2591810A (en) * 1948-09-25 1952-04-08 Rca Corp Electrical time-delay network
US2495072A (en) * 1949-01-03 1950-01-17 Nat Technical Lab Vacuum tube circuit
US2654839A (en) * 1949-02-24 1953-10-06 Lyman R Spaulding Electric pulse generator
US2961610A (en) * 1949-08-18 1960-11-22 Hans H Hosenthien Reflected nonlinear modulators in alternating current electrical analog computers
US2582490A (en) * 1949-09-02 1952-01-15 Gen Electric Co Ltd Thermionic valve integrating circuit
US2642532A (en) * 1949-09-30 1953-06-16 Raytheon Mfg Co Electron discharge circuits
US2675471A (en) * 1950-04-13 1954-04-13 Gen Electric Integrating circuit
US2661421A (en) * 1950-06-28 1953-12-01 Du Mont Allen B Lab Inc Sweep generator protection circuit
US2684442A (en) * 1951-07-31 1954-07-20 Rca Corp Multivibrator
US2755385A (en) * 1953-03-27 1956-07-17 John R Parsons Pulsing oscillator
US2764690A (en) * 1954-05-11 1956-09-25 Joseph F Brumbaugh Low frequency triangular waveform generator
US2814760A (en) * 1955-04-14 1957-11-26 Raytheon Mfg Co Sweep circuits
US2905817A (en) * 1955-09-09 1959-09-22 Westinghouse Electric Corp Sweep generator
US2926309A (en) * 1955-10-04 1960-02-23 Itt Screen grid amplifier
US2924787A (en) * 1956-12-06 1960-02-09 Albert R Diem Oscillator
US2871357A (en) * 1957-01-18 1959-01-27 Gen Electric Saw-tooth wave generator

Also Published As

Publication number Publication date
GB481371A (en) 1938-03-10
DE826007C (de) 1951-12-27
GB575250A (en) 1946-02-11
BE481371A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US2412485A (en) Saw-tooth voltage generator
US2594104A (en) Linear sweep circuits
US2562188A (en) Time base generator
US2185363A (en) Thermionic valve circuits
US2488567A (en) Electron tube power output circuit for low impedance loads
US2584882A (en) Integrating circuits
US2692334A (en) Electrical circuit arrangement for effecting integration and applications thereof
US2323762A (en) Measurement and recording of transient peak voltages
US2494865A (en) Triggered electronic sweep generator
US2527342A (en) Multivibrator and integrating circuit combination
US2508879A (en) Sweep voltage generator
US2983831A (en) Bootstrap circuits
US2093177A (en) Cathode ray tube deflecting cir
US2775694A (en) Electrical circuit arrangements for effecting integration and applications thereof
US2399213A (en) Timing circuit
US2662178A (en) Voltage generating circuit
US2897453A (en) Sawtooth waveform generators
US2591810A (en) Electrical time-delay network
US2727144A (en) Sawtooth generator
US2661420A (en) Linear sawtooth generator
US2935682A (en) Timing circuit
US2602890A (en) Sweep circuit
US2751520A (en) Power supply regulation
US2681411A (en) Linear sweep circuits
US2874311A (en) Linear sweep-signal generator