| 摘要 |
PURPOSE:To improve the balance of the voltages of a heavy-duty load circuit and a light-duty load circuit by supplying energy of resetting the magnetic flux of a main transformer to a heavy load, thereby preventing the voltage of a light load from rising. CONSTITUTION:Coils N3, N4 of resetting the magnetic flux of a main transformer T1' are respectively provided in response to an output circuit. If the output side of +12V is heavier than the output side of -12V, the resetting current of the transformer T1' is flowed from the coil N4 through a clamping diode D6 to the load of a smoothing condenser C1 side which is slightly lower at the voltage due to the heavy load, and the coil voltage of the coil N4 is clamped to the voltage at +12V. Accordingly, since the coil voltage of the coil N3 becomes equal to the coil voltage of the coil N4, the voltage does not rise even if the -12V side is light load. |
