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Clock Pulse Generator

IP.com Disclosure Number: IPCOM000095753D
Original Publication Date: 1964-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Woodland, NJ: AUTHOR

Abstract

The circuit is for generating an endless series of clock pulses on output line 10. The circuit consists of light source 12 which applies light through glass fiber 14 to glass substrate 16. Fiber 14 is mounted in a cantilever manner on fixed support 18. Metallic armature 20 is mounted on fiber 14 in a position to be acted upon by electromagnet coils 22 and 24.

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Clock Pulse Generator

The circuit is for generating an endless series of clock pulses on output line
10. The circuit consists of light source 12 which applies light through glass fiber 14 to glass substrate 16. Fiber 14 is mounted in a cantilever manner on fixed support 18. Metallic armature 20 is mounted on fiber 14 in a position to be acted upon by electromagnet coils 22 and 24.

A signal applied to coil 22 causes fiber 14 to be moved in the horizontal plane. A signal applied to coil 24 causes fiber 14 to be moved in the vertical plane. A signal from AC source 26 is applied directly to coil 22 and is applied to coil 24 through 90 degrees phase-shift network 28. This results in fiber 14 being rotated in a circular path.

Substrate 16 has a series of opaque lines radially drawn in the path of travel of fiber 14. Light passing through substrate 16 impinges on photocell 30, causing an output on line 10. Clock pulses appear on line 10, when fiber 14 is adjacent to clear areas on substrate 16. The spaces between the clock pulses on line 10 occur when fiber 14 is adjacent to opaque lines on substrate 16. The frequency and the duration of the clock pulses on line 10 can be varied by varying the number of the opaque lines drawn on substrate 16 and their width.

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