An apparatus for reproducing and outputting program information, has a reproduction unit which reproduces the program information recorded on a recording medium; an output unit which outputs the reproduced program information; and a controller which controls a reproducing operation carried out by the reproduction unit. Interference in a received signal is reduced by performing synchronization and whitening of the received signal. The diols are selected at least two from a group consisting of ethylene glycol, 2,2-dimethyl-1,3-propanediol, and tricyclodecanedimethanol. In addition, the invention relates to a method of combating harmful insects andor phytopathogenic fungi. The airflow guiding flange is twisted in a radial direction, such that an included angle between the airflow guiding flange and the main body is gradually increased from an outer side towards an inner side of the main body. The power supply circuit can also include a hysteresis control circuit configured to receive at least one of a feedback voltage or a reference voltage and configured to change a hysteresis of the comparator in response to the at least one of the feedback voltage or the reference voltage during a soft-start of the power supply circuit.