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What is electronic load?
E-load is not power supply. It is test instrument used in electronics and electrical engineering to simulate the load that circuit or power source would experience in real-world operating conditions.
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Why do engineers use electronic loads?
E-load surpasses traditional resistive loads, offering flexibility, dynamic control, and the capability for intricate tests. While actual loads are unpredictable, e-load ensures stable load patterns.
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Who uses electronic loads?
E-load is used by device manufacturers and design engineers to test a wide range of power devices, including power supplies, converters, chargers, batteries, solar panels, and fuel cells, and more.
List function
When different trigger sources are selected, the LIST function will form a variety of complex sequences by editing step value, pulse width and slope of each step to meet complicated test requirements.
Battery discharge test function
The load can use CC mode for battery discharge test. After selecting discharge mode, you can set the termination conditions. When any of conditions are met, the discharge will stop, and it will switch to OFF state. During the process, you can monitor time, voltage and discharged capacity of battery.
CR-LED test
With adding of diode break-over voltage setting in the IT8500+ series e-load under CR mode, the load only works when voltage applied at its both ends is higher than the diode break-over voltage to give a real simulation of diode working principle, i.e., the ripple current at real LED test.
VON function
When testing certain power supply products with slow voltage rise, the power supply may enter protective state if the input of the load is turned on before the power supply is turned on. To address this, you can set VON value. The e-load will loading when the power supply voltage exceeds VON value.
Remote measurement
If you connect a power supply to the DC Load, the voltage at the power supply's terminals will not be the same as the voltage at the DC Load's terminals because of the finite resistance from the wires. Remote sensing can effectively removing the effect of the voltage drop in the connection wire.
Measurement of voltage rise time
The IT8500+ series electronic load is provided with special voltage rise/drop time measurement function. This function gives a simple analog of voltage rise/drop speed of oscilloscope test power.
Robert Jones
Reviewed in the United States on May 24, 2025
First thing that I don't understand is that the device has a TTL serial interface. Ridiculous. Who does that? I expect more for a product of this price. This is just lazy engineering on the part of iTech. Second issue is that it will not allow me to set current using SCPI. I can read, I can turn the load on/off but I can't change the load current. I have one of their power supplies and it's been working for two years flat out out - IT6502D rack mount power supply - quality product. But the usability of this programmable load product is not good.
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