the anode 16 of tube 14 is connected to the same positive terminal of the B-battery 25 through conductors 29 and 30, the resistor 2'7" and the conductor 28.the anode 20 of the tube 18 is connected to the positive terminal of a B-battery 25 or other high voltage source through re- I sistors 26 and 27 and a conductor 23.the source of heating current for the oathodes is not shown.the cathodes 15 and 19 are connected to ground through conductors 22, 23 and 24.14 having a cathode-15, an anode 16, and a control electrode 17 and a similar vacuum tube 18 with my inhaving a cathode 19, an anode 20 and a control electrode 21. plane at right angles to the first plane by means of a deflecting coil 12 connected to an input circuit 13 upon which is impressed the voltage or current 'tobe studied. by a deflecting coil 11 to give a'time axis. oscilloscope comprises a cathode ray tube 10 which may be of any well 'circuit constructed in accordance variable for the purpose of beam is deflected relatively slowly in one plane.4 shows the form of the wave of the unsymmetrical multi-vibrator after a saturated vacuum tube has been substituted vfor one of the usual grid-leak resistors. 3 shows the form of a multi-vibrator wave after the circuit has been made unsymmetrical. 2 is a view showing the form of the wave obtained from a symmetrical multi-vibrator of the usual type. 1 is a circuit diagram of an oscilloscope constructed in accordance with my invention. the multi-vibrator fulfills the requirements set forth in the objects of my invention. the usual multi-vibrator circuit is symmetrical and, in this form, it is unsatisfactory as a timing wave oscillator.I employ a multivibrator as the timing wave oscillator.a still further object of my invention is to provide an oscillator which may be adjusted to supply timing waves of different frequencies so that the oscilloscope will be useful for studying the wave shapes of currents and voltages over a wide range of frequencies and also so that either one cycle or a number of cycles of any one particular frequency may be reproduced on the fluorescent screen.a further object of my invention is to provide an oscilloscope in which the timing wave oscillator may easily be synchronized with the wave to' be studied so that the latter wave will appear stationary on the fluorescent screen.a further object of my invention is to provide an oscillator which supplies a timing wave in which the linear portion of each cycle is a large percentage of the complete cycle.An object of my invention is to provide an 08- cillator which will supply a timing wave so shaped that the time axis of the curve on the oscilloscope screen is linear, whereby the voltage or current wave appearing on the screen will appear in rectangular coordinates.My invention relates to cathode-ray oscilloscop s and particularly to an improved oscillator for supplying a timing wave to the cathode-ray tube.G01R13/24- Time-base deflection circuits.G01R13/00- Arrangements for displaying electric variables or waveforms.G01R- MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES.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 Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co Priority to US616488A priority Critical patent/US1934322A/en Application granted granted Critical Publication of US1934322A publication Critical patent/US1934322A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Westinghouse Electric and Manufacturing Co 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 or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US616488A Inventor William O Osbon Current Assignee (The listed assignees may be inaccurate. Google Patents Cathode ray oscilloscopeÄownload PDF Info Publication number US1934322A US1934322A US616488A US61648832A US1934322A US 1934322 A US1934322 A US 1934322A US 616488 A US616488 A US 616488A US 61648832 A US61648832 A US 61648832A US 1934322 A US1934322 A US 1934322A Authority US United States Prior art keywords tube grid cathode circuit wave Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US1934322A - Cathode ray oscilloscope
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