Power supply for a television apparatus

Abstract From the Canadian patent

During a power-up mode of a television receiver power supply, a first run supply voltage is generated by rectifying a retrace voltage in a flyback transformer of a horizontal output stage of the television receiver. The rectified voltage is coupled through a resistor and a diode to a power supply voltage receiving terminal of a load circuit. A voltage regulator that includes a pass transistor regulates the voltage at the terminal during both the power-up and standby modes. During the power-up mode, when the ambient temperature is higher than during the standby mode, the current in the transistor is lowered as a result of a current that is coupled to the terminal via the diode. This reduces …