How to connect DC stabilized power supplies in series
In many cases, if we need more power supplies and can't find enough on hand, we usually consider connecting two in series or parallel, or other regulated power supplies with high stability coefficients to obtain higher voltages , current or power. In fact, many programmable power supplies can be set up in series or parallel, but the correct method must be used.
When connecting multiple outputs in series to obtain higher voltages, observe the following considerations:
(1) The total voltage must not exceed the rated floating ground voltage of any output power supply, which is the highest isolation voltage between the output terminals and ground. The safe floating voltage of general programmable DC power supplies is 240 volts, and the safe floating voltage of some high-voltage output power supplies is higher.
(2)Each power output cannot be set to negative voltage output.
(3) The output values of the voltage and current settings of the series power supplies should be consistent.
When setting up each power output, the first task is to consider the total voltage value required. Therefore, the limit value of each output current is first set to the maximum current limit value that the load can bear. Second, it is distributed evenly to each power supply based on the total voltage required. For example, if you are using two power supplies in series, you can set each output to half the total voltage value. If three power supply outputs are used in series, each output voltage can be set to one-third of the total voltage.
If multiple power supply outputs are connected in parallel to achieve higher current output, please observe the following precautions:
1. Without one power supply as the main power supply, the output must work in constant voltage (CV) mode, while the other power supply serves as the slave power supply, and the output must work in constant current (CC) mode.
2. The output load must be able to consume enough current to ensure constant current output in constant current mode.
3. Try using the same type of programmable power supply or an output with the same voltage and current rating.
