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A Low‐Frequency Oscillator
dc.contributor.authorHowe, Robert Miltonen_US
dc.contributor.authorLeite, Richard Josephen_US
dc.date.accessioned2010-05-06T22:41:13Z
dc.date.available2010-05-06T22:41:13Z
dc.date.issued1953-10en_US
dc.identifier.citationHowe, R. M.; Leite, R. J. (1953). "A Low‐Frequency Oscillator." Review of Scientific Instruments 24(10): 901-903. <http://hdl.handle.net/2027.42/70771>en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/70771
dc.description.abstractA low‐frequency simple‐harmonic oscillator, employing a relatively new method of approach, is described. An electronic analog computer of the differential analyzer type is used to solve the differential equation of a mass‐spring system. Three dc operational amplifiers perform the computation and a sinusoidal output is obtained as the solution of the differential equation. Frequency is variable from 0.01 to 100 radians per second in steps of 0.01 radian per second. Distortion is less than 0.1 percent. Maximum output is 90 volts peak into a load of 100 000 ohms. The oscillator is particularly useful in the design and testing of servomechanisms and electronic simulators.en_US
dc.format.extent3102 bytes
dc.format.extent197641 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.publisherThe American Institute of Physicsen_US
dc.rights© The American Institute of Physicsen_US
dc.titleA Low‐Frequency Oscillatoren_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Aeronautical Engineering, University of Michigan, Ann Arbor, Michiganen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/70771/2/RSINAK-24-10-901-1.pdf
dc.identifier.doi10.1063/1.1770545en_US
dc.identifier.sourceReview of Scientific Instrumentsen_US
dc.identifier.citedreferenceRaggazzini, Randall, and Russell, Proc. Inst. Radio Engrs. 35, 444 (1947).en_US
dc.identifier.citedreferenceHagelbarger, Howe, and Howe, “Investigation of the Utility of an Electronic Analog Computer in Engineering Problems,” UMM 28, April, 1949, Engineering Research Institute, University of Michigan.en_US
dc.identifier.citedreferenceG. A. Korn and T. M. Korn, Electronic Analog Computers (McGraw‐Hill Book Company, Inc., New York, 1952).en_US
dc.identifier.citedreferenceFor example, Western Electric 1μfd, 200 VCD, No. D168233; also Condensor Products 1μf, 200 VDC, Plasticon, Cat. No. LAC2C1.en_US
dc.identifier.citedreferenceC. E. Howe, R. M. Howe, and L. L. Rauch, “Application of the Electronic Differential Analyzer to the Oscillation of Beams, Including Shear and Rotary Inertia,” UMM 67, Appendix 5, January 1951, Engineering Research Institute, University of Michigan.en_US
dc.identifier.citedreferenceA. B. Macnee, Proc. Inst. Radio Engrs. 40, 303 (1952).en_US
dc.identifier.citedreferenceWilliams, Amey, and McAdam, Elec. Eng. 68, 934 (1949).en_US
dc.identifier.citedreferenceThe frequency is given by 1/RC,1∕RC, and any particular value of 1/R1∕R is obtained by the proper parallel combination of resistors. For example, 1 radian per second is obtained with R  =  1thinsp;megohm,R=1thinsp;megohm, C  =  1 microfarad,C=1microfarad, while 1.2 radians per second is obtained by adding 5 megohms in parallel with the previous 1 megohm, making R  =  5/6R=5∕6 as required.en_US
dc.owningcollnamePhysics, Department of


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