Abstract: An image forming apparatus including: an image forming device provided in a housing; a fan to cool an interior of the housing; an AC/DC board; a first temperature detecting element configured to output a signal corresponding to a temperature in the housing; a second temperature detecting element configured to output a signal corresponding to a temperature of an element mounted on the AC/DC board; and a controller configured to control the fan when at least one of a first condition and a second condition is satisfied, the first condition being a condition in which a first detection temperature detected based on the signal received from the first temperature detecting element is not less than a first temperature threshold, the second condition being a condition in which a second detection temperature detected based on the signal received from the second temperature detecting element is not less than a second temperature threshold.

Abstract: A device includes a driving portion, a transformer having a primary winding and a secondary winding, the secondary winding generating an output voltage, the driving portion being connected across the secondary winding so that the output voltage is applied to the driving portion, a switching element connected in series to the primary winding, a first controller provided in a primary side of the transformer for controlling the switching element, and a second controller supplied with the output voltage. The second controller is configured to perform, during implementation of a burst switching control, transmitting a stop signal to the first controller when the output voltage exceeds a first voltage, and transmitting, after transmission of the stop signal, a resumption signal to the first controller when the output voltage falls below a second voltage lower than the first voltage.

Abstract: An image forming apparatus including: an image forming device provided in a housing; a fan to cool an interior of the housing; an AC/DC board; a first temperature detecting element configured to output a signal corresponding to a temperature in the housing; a second temperature detecting element configured to output a signal corresponding to a temperature of an element mounted on the AC/DC board; and a controller configured to control the fan when at least one of a first condition and a second condition is satisfied, the first condition being a condition in which a first detection temperature detected based on the signal received from the first temperature detecting element is not less than a first temperature threshold, the second condition being a condition in which a second detection temperature detected based on the signal received from the second temperature detecting element is not less than a second temperature threshold.

Abstract: A device includes a driving portion, a transformer having a primary winding and a secondary winding, the secondary winding generating an output voltage, the driving portion being connected across the secondary winding so that the output voltage is applied to the driving portion, a switching element connected in series to the primary winding, a first controller provided in a primary side of the transformer for controlling the switching element, and a second controller supplied with the output voltage. The second controller is configured to perform, during implementation of a burst switching control, transmitting a stop signal to the first controller when the output voltage exceeds a first voltage, and transmitting, after transmission of the stop signal, a resumption signal to the first controller when the output voltage falls below a second voltage lower than the first voltage.