Anthony, Inc.

New Anthony, Inc.

Lumatronix Manufacturing, Inc.

Doo Eui Yoon

Paul J Artwohl

Cheong Bon Han

Eun Chul Shin

System and methods for providing anti-condensation system are disclosed. A relative humidity (RH) sensor signal from a sensor on or near a control surface is received. An AC power input is received. A phase of the AC power input is modulated at least partly in response to the sensor signal in such a manner that a phase-modulated AC power output provided to a heater is a) substantially constant at a first power level (P) in a low RH region ranging from 0% RH to a first RH (RH), b) varying as a function of the sensor signal from Pto a second power level (P) in an intermediate RH region ranging from RHto a second RH (RH), and c) substantially constant at Pin a high RH region beginning at RH.

Anti-condensation control system

A ballast is disclosed which can operate at an effective level of output with a number of different input voltage levels. A ballast is also disclosed that uses a ceramic as a heat sink for switching transistors. A ballast is further disclosed which uses a start signal for a power factor circuit to boost voltage after the load for the ballast has already had a current applied to it. Furthermore, a ballast is disclosed which has a transformer having a permeability which varies somewhat inversely with temperature over a given temperature range.

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San Jose, CA, United States of America

Doo Eui Yoon