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Mining Publication: Waveform Generator for (EM) Location of Trapped Miners

NOTE: This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.

Original creation date: July 1974

Image of publication Waveform Generator for (EM) Location of Trapped Miners

This report describes a circuit for driving a low-frequency loop antenna from a miners cap lamp battery. The circuit is a miniature waveform generator and is part of the electromagnetic (em) trapped miner location system. Two engineering models were designed, constructed, and tested, and 50 final production units were fabricated using discrete component construction. A final discrete potted printed circuit configuration was developed that is now ready for field testing.

Authors: Collins Radio Group Rockwell International

Contract/MOA Report - July 1974

NIOSHTIC2 Number: 10008001

Collins Radio Group Rockwell International, U.S. Bureau of Mines contract No. HO133045. NTIS No. PB-240481, 1974 Jul; :25 pages