Pulse width modulated defroster

Details Pulse width modulated defroster Pulse width modulated defroster

2006-01-06

2008-09-09

Fuqua, Shawntina (Department: 3742)

Electric heating

Heating devices

Combined with diverse-type art device

C219S202000, C219S200000, C219S482000, C219S494000, C219S497000, C219S501000, C219S483000, C219S492000

Reexamination Certificate

active

07423240

ABSTRACT:
A window defroster system that includes a heater grid and a controller. The controller includes a pulse width modulator configured to provide a driving signal to the heater grid. The driving signal has an initial heating portion and a pulsed portion. The initial heating portion provides an initial voltage that is greater than an optimal operating voltage of the heater grid, the pulsed portion provides a pulsed signal with a pulsed high voltage that is greater than the optimal operating voltage.

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Digi-Key Catalog No. T041, Jan.-Apr. 2004.

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