What happens when you connect power supplies in parallel?
A common topology employed to increase output power is to connect the outputs of two or more supplies in parallel. In this configuration each power supply delivers the required load voltage while connecting the supplies in parallel increases the available load current and thus the available load power.
What do they call a parallel circuit?
So, series circuits are also called Voltage dividers. For parallel circuits, it’s the opposite, as voltage will flow the same in each path, the current get’s dropped/separated for each path. For that very behaviour, these circuits are also called as Current dividers.
Can a power supply be connected in parallel?
Two or more power supplies can be connected to supply higher voltages or current. The simplest method to create higher current is to connect the power supplies in parallel and leave only one supply in constant voltage mode.
How are power supplies connected to each other?
A common topology employed to increase output power is to connect the outputs of two or more supplies in parallel. In this configuration each power supply delivers the required load voltage while connecting the supplies in parallel increases the available load current and thus the available load power.
How is the output voltage of a power supply set?
The output voltage controls of one power supply should be set to the desired output voltage (CV); the other power supplies should be set for a slightly higher output voltage. The supplies with the higher output voltage setting will provide constant current output, and will drop their output voltage until it equals the output of the CV supply.
Why are power supply voltages not the same?
The problem is that the power supplies don’t have exactly the same output voltage. The power supply with the highest output voltage will provide all the current that the circuit is requiring until it reaches it’s current limit. What happens then depends on the current limit circuit inside the power supply.