Load Function
5.1.2 Basic Operation Mode
The IT8000 series electronic loads operate in constant voltage, current, resist-
ance, or power modes to satisfy a wide range of test requirements.
• Constant Current Operation Mode (CC)
Under CC mode, the electronic load will consume constant current in regard-
less of whether the input voltage changes or not, as shown in the following
figure. The CC mode ensures that the UUT voltage outputs remain stable
when the load varies.
• Constant Voltage Operation Mode (CV)
Under CV mode, the electronic load will consume sufficient current to main-
tain the input voltage at setting voltage. As shown in the following figure. For
battery chargers or charging stations, CV mode can change their output volt-
age to ensure the precision of the charging current.
• Constant Power Operation Mode (CW)
Under CW mode, the electronic load will consume a constant power. If input
voltage rises, the input current decreases and power P (= V * I) will maintain
at setting power. As shown in the following figure.
When the UUT is a battery, the electronic load changes to simulate device
loading behavior. Many battery discharge applications and power consump-
tion profiles can be simulated for analysis, making the CW mode the best
choice for simulating electronic device loads.
• Constant Resistance Operation Mode (CR)
Under CR mode, the electronic load is equivalent to a constant resistance
and will give linear change of current with input voltage change. As shown in
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