Electronic loads are load devices that can be set to the desired resistance value.
Internally they are made up of a combination of semiconductor elements. Since the repeated and rapid changing of loads is not possible by human hands, electronic loads are used to evaluate batteries and power supplies.
Operating Modes of Electronic Loads
Constant current (CC) operation
The unit operates at the current value that is set. Even if the terminal voltage changes during operation, the current will remain constant.
Constant voltage (CV) operation
The unit operates at the voltage value that is set. Even if the terminal current changes while discharging, the voltage will remain constant.
Constant resistance (CR) operation
The unit operates at the resistance value that is set. The value of the terminal voltage is measured, and is used to determine the value of the current for discharging according to the set value.
Constant power (CP) operation
The unit operates at the power value that is set. If the terminal voltage changes while discharging, a constant level of power can be consumed according to the change.
Example of the Use of Electronic Loads
Ideal for evaluation testing for DC motors on automobiles
Our REK Series of DC power supplies can be combined with our EHD Series to recover regenerative power from motors in order to evaluate motors without damaging the ECU or power supplies.
Electronic load with regenerative function
Recently, it is also used as a DC electronic load with regenerative function and regenerative power supply that regenerates load power to a commercial power system. We have extensive models of the regenerative electronic load and the regenerative DC power supply.
Charge and discharge power supply for battery inspection
Electronic loads are also used for battery charge and discharge tests. We have extensive models of CD series and CDPU series, which are a charge/discharge power supplies that can be used for repeated tests of charging and discharging various rechargeable batteries.
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Matsusada Precision manufactures everything from small benchtop electronic loads to power regenerative DC power supplies that can be used as high-power electronic loads.
Ultra-Compact DC Electronic Load
This product is a 75 watt DC electronic load of a small benchtop.
List of DC Electronic Loads
DC Electronic Loads
Introducing a small benchtop electronic load and a 19-inch rackmount high-performance electronic load.
Regenerative DC Power Supply
For battery simulation and battery charge/discharge cycle tests