Voltage balance circuit

A voltage balance circuit, comprising:

• at least two power supply circuits, each power supply circuit having an output end, each power supply circuit outputting an output voltage via the output end;
• at least two diodes, positive electrodes of the at least two diodes being electrically connected with corresponding output ends of the at least two power supply circuits;
• a load, negative electrodes of the at least two diodes being electrically connected with the load;
• at least two voltage dividing circuits, each voltage dividing circuit having a first resistor and a second resistor connected in series, one end of the first resistor of each voltage dividing circuit being connected with the output end of one corresponding power supply circuit;
• at least two digital variable resistors, the second resistor of each voltage dividing circuit being connected with one corresponding digital variable resistor in series, the output voltage of the corresponding power supply circuit being adjusted within an allowable voltage range by the corresponding digital variable resistor;
• and
• at least two power end microcontroller units, each power end microcontroller unit having an inter-integrated circuit, being electrically connected to one corresponding digital variable resistor through the inter-integrated circuit and reading a resistance value of the corresponding digital variable resistor;
• wherein each power end microcontroller unit generates a control signal according to the resistance value of the corresponding digital variable resistor, and the inter-integrated circuit of each power end microcontroller unit outputs the control signal to the corresponding digital variable resistor for adjusting the resistance value of the corresponding digital variable resistor.

A voltage balance circuit, comprising:

• two power supply circuits, each power supply circuit having an output end, each power supply circuit outputting an output voltage via the output end;
• two diodes, positive electrodes of the two diodes being electrically connected with corresponding output ends of the two power supply circuits;
• a load, negative electrodes of the two diodes being electrically connected with the load;
• two voltage dividing circuits, each voltage dividing circuit having a first resistor and a second resistor connected in series, one end of the first resistor of each voltage dividing circuit being connected with the output end of one corresponding power supply circuit;
• two digital variable resistors, the second resistor of each voltage dividing circuit being connected with one corresponding digital variable resistor, the output voltage of the corresponding power supply circuit being adjusted within an allowable voltage range by the corresponding digital variable resistor;
• and
• two power end microcontroller units, each power end microcontroller unit having an inter-integrated circuit, being electrically connected to one corresponding digital variable resistor through the inter-integrated circuit and reading a resistance value of the corresponding digital variable resistor;
• wherein each power end microcontroller unit generates a control signal according to the resistance value of the corresponding digital variable resistor, and the inter-integrated circuit of each power end microcontroller unit outputs the control signal to the corresponding digital variable resistor for adjusting the resistance value of the corresponding digital variable resistor.