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Electrical Impulse Generator

IP.com Disclosure Number: IPCOM000096915D
Original Publication Date: 1962-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Martin, VC: AUTHOR

Abstract

The impulser employs a single transducer for generating a plurality of electrical impulses. In certain instances, it is physically difficult to arrange a series of transducers relative to movable impulse generating apparatus. However, generally a single transducer can be properly positioned. The device is suited to indicate discrete positions of a moving member. The movement of the member to be positioned is translational or rotational.

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Electrical Impulse Generator

The impulser employs a single transducer for generating a plurality of electrical impulses. In certain instances, it is physically difficult to arrange a series of transducers relative to movable impulse generating apparatus. However, generally a single transducer can be properly positioned. The device is suited to indicate discrete positions of a moving member. The movement of the member to be positioned is translational or rotational.

The rotatable non magnetic drum 10 has a plurality of arcuately spaced, outwardly opening slots 12, each of different depth. Slots 12 are filled with bars of ferromagnetic material 13. Pickup head 14 is mounted close to the surface of
10. Head 14 consists of a permanent magnet 15. It is fixed at one end to soft iron core 16 having turns of wire 17.

When any bar 13 passes under head 14, the magnetic path reluctance is momentarily reduced. This results in an increase in the number of lines of magnetic flux linking turns 17. Since each bar 13 varies in size or in width, the change in reluctance of the magnetic path varies differently as bars 13 pass head
14. The different signals identified by voltage amplitude discriminating and decoding circuitry.

The output of head 14 is connected to the input of power amplifier 18. From this, the output signal is applied to the inputs of voltage level discriminators 20... 23 corresponding in number to the number of bars 13. Essentially, each discriminator 20...23 cons...