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Ultra Low Power LCD Indicator: This circuit serves as an
ultra-low power replacement for multiple LED on-off indicators. It also has the advantage of being easy to read in full daylight. With the
parts shown, it is possible to display four bits of information. The display that I used has three digits and 2 decimal points for a total of
23 segments. Different groupings of segments can be.... (added 10/05)
Ultracompact LCD Backlight Inverters: AN81 Linear Technology It has
become desirable to fashion laptop computers with large area screens, leaving little room for the display's backlight inverter electronics.
Miniaturization limitations of high voltage magnetic transformers impose limits on achievable space reduction. Another voltage step-up
technology, piezoelectric transformers, permits the desired size reduction and provides additional benefits. This publication describes
practical piezoceramic transformers and support circuitry. Ancillary benefits of the piezoelectric approach are also described. Appended
sections detail transformer operation and feedback loop considerations.
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