| 摘要 |
A power supply Active Bleed Voltage Balancing Circuit for attachment to the outputs of a regulated power supply having at least a first output and a second output to shunt load power from an output that has become unloaded and has an output voltage that is rising past an acceptable limit. The Active Bleed Voltage Balancing Circuit has an inductor with a first terminal coupled to the first power supply output. The second output voltage exceeds the first output voltage. An oscillator driven totem-pole driver alternately drives the inductors second terminal to the power supply second output and then to ground. The duty cycle ration is adjusted to equalize the volt-seconds applied in each position. An alternative circuit uses a multiple winding inductor with a 50/50 duty cycle and with balancing achieved by adjusting the turns ratio to equal the ratio of the output voltages. |
