A positive-common power supply is a type of power supply where the common terminal for analog remote control is internally connected to the positive output terminal, placing them at the same potential. Consequently, when using analog remote control signals (e.g., Vcon, Icon, Vmoni, Imoni), the common terminal of the external controller **must be left floating and must not be connected to ground**. If the power supply's negative output is grounded (a common configuration for providing a positive output voltage), grounding the remote control common will create a short circuit across the power supply's output. This can damage or cause a malfunction in both the power supply and the external control circuit.
To prevent this issue, ensure your control circuit is properly isolated or that its common is floated from ground. Adhering to these guidelines is crucial to prevent damage to the equipment.
