Heater lamp control apparatus and method to detect an inputted AC voltage and providing a pulse signal to correspond thereto

摘要

A heater lamp control apparatus and method of detecting an input AC voltage and providing a pulse signal corresponding thereto, includes an AC voltage phase detection unit to detect a phase of the inputted AC voltage when a magnitude of the inputted AC voltage is over a predetermined level. The heater lamp control apparatus also includes a pulse signal generation unit to generate a pulse reference signal based on a result of the detection, a pulse delay signal that is phase-delayed, and a heater lamp control pulse signal based on a result of the comparison of the magnitudes of the pulse reference signal and the pulse delay signal. The heater lamp control pulse signal includes a control unit to control a drive-timing of the heater lamp based on the heater lamp control pulse signal. Thus, the heater lamp control apparatus minimizes a flickering phenomenon as well as an amount of electric power consumed in a heater lamp.

主权项

1. A heater lamp control apparatus to apply an AC voltage inputted through a power input unit to a heater lamp via a power supply unit, comprising:
an AC voltage phase detection unit to detect a phase of the inputted AC voltage when a magnitude of the inputted AC voltage is over a predetermined level; a pulse signal generation unit to generate a heater lamp control pulse signal based on a result of the detection; and a control unit to control a drive-timing of the heater lamp based on the generated heater lamp control pulse signal, wherein the pulse signal generation unit generates a pulse reference signal based on a result of the detection, a phase-delayed pulse delay signal based on the pulse reference signal, and the heater lamp control pulse signal based on a result of a comparison of magnitudes of the pulse reference signal and the pulse delay signal.