Seamus Heaney’s “Glanmore Sonnets” form the center of his 1979 collection Field Work. The sonnet series pose an interesting topic of study not only because they constitute a formalist move for a free verse poet, but also because of the way Heaney uses the sonnet form to demonstrate his view of time. In my examination of “Glanmore Sonnets,” I am interested in how Heaney fulfills and expands the traditional role of the sonnet.In this paper, I examine how Heaney’s “Glanmore Sonnets” both enact the sonnet’s traditional concern with immortality and time and expand the form to embody his view of the fluid nature of time and being.

A full-bridge, parallel-loaded, resonant, zero current/zero voltage switching converter has been developed for DC-DC voltage transformation. The power supply was used to condition power sourced by a 28-V, 400-A Neihoff alternator installed in a HMMWV that delivered power to a 5-kW mobile radar. This design focuses on achieving maximum power density at reasonable efficiency (i.e. > 80%) by operating at the highest resonant and switching frequencies possible. A resonant frequency of 392-kHz was achieved while providing rated power. The high resonant frequency was facilitated by the development of an extremely low inductance layout (< 20 nH) capable of conducting the high resonant currents associated with this converter topology. A design methodology is presented for parallel-loaded, resonant voltage boost converters utilizing the development of a converter prototype as a basis. The experimental results are presented as validation of the methodology.

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