This bench tester is designed for testing MOSFETs, transistors, diodes and LED backlight panels. It provides constant current and constant voltage output with true dual-loop protection that safeguards both voltage and current simultaneously. Key benefits - Safe, precise testing: CV and CC regulation with dual protection prevents damage from overvoltage or overcurrent. - Simple two-knob control: Two potentiometers separately adjust voltage and current to match the device under test. - Clear operating range: Output current from 0.25 mA to 3.4 mA; adjust with the current control to the safe level needed for your test. - Broad compatibility: Suitable for MOS devices, transistors, diodes and LED backlight panels. How to use - For MOS devices, set the current to the minimum scale of 0.25 mA. - For LED backlight panels, use up to the maximum current of 3.4 mA. - Turn the voltage knob clockwise to increase voltage (and current within the safe CC range), or counterclockwise to decrease. Applications - Characterization and testing of MOSFETs, diodes and transistors in R&D or QA. - LED backlight panel testing and bench verification within safe current limits. - General electronics bench testing and component verification for repair or education. Notes - Exceeding the specified voltage or current can cause permanent damage to components. Always dial in appropriate, safe levels before powering the DUT.