Semiconductors Component Checker and Curve Tracer is useful for checking & tracing the characteristics curve of a variety of components in very short time duration. The Component Checker and Curve Tracer consist of five different sections that include Diode Checker, Transistor Checker, FET Checker, Transistor Parameter Checker and Curve Tracer. The Component Checker and Curve Tracer is provided with test cables for connecting devices. The Semiconductors Component Checker and Curve Tracer requires 230 V &plusmin; 10% at 50 Hz A.C. Mains power for operation.