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Trapped miner location and communication system development program - 4 volume set. Volume 4 - performance test and evaluation of a full wave location transmitter.

Authors
Linfield-RF; Farstad-AJ; Fisher-C Jr.
Source
NTIS: PB/235-608 Available for Reference At Bureau Libraries :1-52
Link
NIOSHTIC No.
10001500
Abstract
This report (Contract No. H0220073) describes the development, laboratory testing, and intrinsic safety testing of a full-wave location transmitter. The primary objective was to obtain as rapidly as possible an electromagnetic transmitter and receiver system for use in locating trapped miners. Since the transmitter would be used in coal mines, intrinsic safety was an important consideration. Other factors considered in the design included size, weight, cost, operating life, and ease of deployment. A miner's lamp battery was to be used as the source of prime power. Two basic location systems, a continuous wave system and a pulse- type system, were designed, fabricated, and field tested. Subsequently, a new design concept, using four switching transistors to obtain full-wave drive to a resonated loop antenna, was developed.
Publication Date
19730101
Document Type
CP; Final Contract Report
Funding Type
Contract
Fiscal Year
1973
NTIS Accession No.
PB-235608
NTIS Price
A05
Identifying No.
OFR 41(4)-74; Contract-H0220073
NIOSH Division
PRC
Source Name
NTIS: PB/235-608; Available for Reference At Bureau Libraries
State
PA
Performing Organization
Westinghouse Electric Corp.
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