Laboratory power supplies in linear technology with separate LCD digital displays for voltage and current. Ideal for laboratory, workshop, and production due to high constancy of output parameters. Robust construction and simple operation. Continuously short-circuit proof with very good control behavior and low residual ripple. 10-turn spiral potentiometer for precise adjustment of the output voltage. The devices can be operated either as constant voltage or constant current sources. The outputs of the dual voltage sources can be connected in series or in parallel. The devices are equipped with overtemperature protection and presetting of the output data without load.