Low voltage transformer coupled ink jet driver

Details Low voltage transformer coupled ink jet driver Low voltage transformer coupled ink jet driver

B - Operations, Transporting

41

J

101/96.0211

B41J 2/045 (2006.01) B41J 2/015 (2006.01)

Patent

CA 1238239

Abstract of the Invention The invention consists of a transformer coupled low voltage power amplifiers which provides the moderate voltage (200-500 Vp-p) excitation potentials required by PZT ink jet or similar device elements. Transformer coupling is viable in that ink jet drive requirements are "return to zero" (no net DC component). Product safety aspects are enhanced since high voltage power supplies are not required, furthermore significant reductions in cost of implementation are realized due to the absence of high voltage power supplies and by allowing the use of monolithic power amplifiers. Savings in power may also be realized by matching the transformer to the ink jet PZT element as components of a resonant network.

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