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Modifications of Pfeifer's Bird‐Control Apparatus 1
Author(s) -
Rosenau R. C.,
Worstell R. V.
Publication year - 1969
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1969.00021962006100020046x
Subject(s) - timer , interrupter , agronomy , chemistry , biology , electrical engineering , engineering , microcontroller
Pfeifer's bird‐control apparatus was modified and tested in 1967. Several safety feasures were incorporated. Also, an industrial timer was added as an interrupter to break the circuit from a high voltage transformer at regular, short intervals providing the arcing and snapping needed in a dry climate.