Multiple-output power supply unit including voltage generation circuits for applying voltages to loads and image forming apparatus having the power supply unit

A multiple-output power supply unit comprising:

• a first voltage generation circuit that generates a first voltage applied to a first load;
• a first output terminal that outputs a second voltage corresponding to the first voltage to a second load;
• a first constant voltage element that is connected to the first output terminal;
• a second constant voltage element that is provided between the first constant voltage element and a ground;
• a second output terminal that is connected between the first constant voltage element and the second constant voltage element so as to output a third voltage having a predetermined potential difference from the second voltage to a third load that is provided in a state of being electrically connected to the second load;
• and
• a second voltage generation circuit that is connected to the second output terminal so as to generate a fourth voltage having a voltage value different from the second and third voltages in accordance with the third voltage.