What is CC and CV Mode of Volteq CC CV Power Supply?

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sean
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What is CC and CV Mode of Volteq CC CV Power Supply?

Postby sean » Sat Jan 10, 2015 6:08 pm

A Volteq Power Supply is a CC CV Power Supply that can be operated in either of the two modes: CC (constant current) and CV (constant voltage) mode. You can tell which mode the power supply is in by looking at the front panel, where either the "CC" or "CV" indicator light is on. Needless to say, if "CV" light is on, it means that the power supply is in constant voltage mode.

If you are a novice user, you may wonder what does it mean? With any Volteq CC CV power supply, you can set both the current and voltage using the knobs in the front. By doing so, you are not setting the actual current or voltage, you are merely setting the limits for voltage and current.

If you remember Ohm's Law, you know that at any given load, you can only control either the current or the voltage, the other is determined by Ohm's Law and the load. When the "CV" light is on, it means that the voltage you see on the display (which is always the actual voltage the power supply is putting out) is the same as the voltage you set, while the current you set is higher than the actual current allowed in the particular configuration. This is because with the particular load connected, you have reached the limit set by the voltage knob. Alternatively, when the "CC" light is on, the current on the display (which always shows the actual current flowing through the circuit) is the same as the current limit you set, and the voltage limit you set is higher than the actual voltage displayed on the power supply.

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