Tuesday, 18 August 2015

Programmable DC Electronic Load

programmable DC Electronic Load

Programmable DC Electronic Load is the principle of the flux guide or the control of the power MOSFET transistors (duty ratio of the size of the volume), the power dissipated by the power consumption of the power tube apparatus which can accurately detect the load voltage, load current precise adjustment, while analog load short-circuit, an analog resistive and inductive load is capacitive, capacitive load current rise time. Debugging detect general switching power supply is indispensable.

Programmable DC electronic load can simulate real-world loads (appliances). It has a constant current, constant resistance, constant voltage and constant power capabilities, as well as short circuit, over current, dynamic, etc., it should be said that all power manufacturers will be useful, but also must have. Electronic load into DC electronic load and AC electronic load, electronic load due to the application surface problem, this paper introduces the DC electronic loads.

1. Voltage, current and power of choice

According to the output characteristics of the device under test to select electronic load: voltage, current, power and accuracy of the testing requirements. Programmable DC Electronic Load Module can only work when tested alone or parallel operation, the series for the module is very dangerous. So ideal state is that all requirements are within the range single group, followed by multiple modules connected in parallel to achieve the selection. That is, when the voltage of the selected module must meet the test requirements. Individual modules or the full sum of the current and power box is installed to meet the testing requirements.

2. Accuracy and resolution choices

Accuracy and resolution is an important parameter index electronic load. Meaning accuracy of different representations of programmable DC electronic load.