To operate the power supply in constant current (CC) mode, set the power supply to a voltage value higher than the voltage value calculated by Ohm''s law from the current value to be passed through the load and the resistance value of the load, and the power supply will operate in constant current mode.
Controlling current in a DC power supply is essential in various industrial applications. The basic concept revolves around Ohm’s Law, where current (I) is the ratio of voltage (V) to resistance (R). By manipulating either the voltage or resistance, you can control the current flowing through the circuit.
The output current is determined by the resistance of the attached load, as per Ohm’s law – it is not directly configured or specified by the user. Nevertheless, most DC benchtop power supplies do have a user-configurable “current” setting, which is described below. How to avoid excessive current?
The voltage is regulated to a constant value, and the current varies as a function of the load. If the load current is high and the load attempts to draw current above the set current limit, the power supply will by default limit the current to the set value and operate in CC mode.
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