General description The QDB 3A 12-24V Ignition Coil Test Injector Tester is a versatile diagnostic tool designed for automotive applications. It allows users to drive and test various components such as ignition coils, fuel injectors, solenoid valves, motors, and stepper motors, making it an essential tool for automotive technicians. Technical specifications Power supply voltage range: 12V-24V Electromagnetic coil drive current range: 0-3.5A Output frequency range: 1Hz-100kHz Duty cycle adjustment: 1%-100% Adjustable voltage: 1.25V-11.5V Measurement allowed error: +/- 1-3 cm Usage Drive test ignition coils, including independent ignition, coil type, and module type. Drive test fuel injectors for gasoline cars and vehicles (12V and 24V). Drive and test solenoid valves and fuel metering valves with different duty ratios. Drive and test motors controlled by various duty ratios, including urea pump motors. Drive and test idling stepper motors, instrument stepper motors, and headlight