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Our training courses focus on teaching the fundamental principles that form the essential building blocks of a solid and effective education. Specifically designed for beginners, these courses provide step-by-step instruction and cover the basic concepts in detail. Ideal for school education, they require minimal or no prior knowledge. Each multimedia course begins by introducing the theoretical foundations, which are then reinforced through practical measurements. Special emphasis is placed on developing skills in handling measuring instruments and understanding the operation of simple electric circuits. By combining theory with hands-on practice, trainees gain a comprehensive understanding of the subject matter.

Unitrain DC/AC Conversion

In this course, we explore the conversion of DC voltage from car batteries into AC voltage required for modern electrical drives. The generation of AC voltage and currents is explained and visually demonstrated in a clear manner. Through practical experiments using a single printed circuit board, students verify the theoretical knowledge and gain a comprehensive understanding of DC/AC conversion. Regular knowledge tests ensure effective learning and quick progress in mastering the essential aspects of DC/AC conversion.


          • 1 Experiment card (potentiometer and incandescent lamp, PWM generator, DC-AC converters)
          • LabSoft browser course software and virtual instruments

Course concepts:

          • Electrical induction
          • Lorentz force
          • “Right hand rule”
          • Relationship between current and voltage
          • Pulse width modulation (PWM)
          • PWM and voltage
          • PWM and current
          • Generating upper half-wave
          • Generating AC voltage
          • Rotating electrical field


In motor vehicles, actuator systems often require variable power levels for precise control. To achieve this, actuators that need intermediate values between ON and OFF are controlled using pulse-width modulated signals. Our training system enables trainees to document measurements, signals, and fault protocols, analyze and evaluate the data, and effectively present their findings. Through this process, trainees learn how to identify faults, propose appropriate strategies for rectification, and develop skills in fault isolation.


          • 1 Experiment card with FET amplifier and indicator LEDs
          • Labsoft browser and course software

Course concepts:

          • Knowing the principle of pulse-width modulation
          • List use cases of PWM in automotive engineering
          • Power matching with PWM
          • Explain the difference between direct and pulsed current
          • Measurement of PWM signal characteristics: frequency, amplitude, pulse-width (duty cycle), edge and signal shapes
          • Identify control and working circuits
          • Measurement of PWM signals
          • Diagnosis of PWM-controlled components


Discover the captivating world of automotive electronics through our training system. Easily activate pre-made circuits using a few jumpers. Dive into our multimedia course for comprehensive learning materials. Gain hands-on experience using measuring instruments with a customer vehicle.

Course Concepts:

          • Direct and alternating voltages, pulse-width modulated signals
          • Current, resistance, Ohm‘s law
          • Circuit analysis: Brake light, instrument lighting, heating fan, horn
          • Series, parallel and mixed resistor circuits
          • Fault diagnosis: Interrupted circuit, short circuit, defective components


Discover our advanced 4-mm system, offering larger components and versatile power supply options in a compact, all-in-one case. Assemble circuits effortlessly without computers, thanks to its user-friendly design and efficiency. With a multifunctional power supply, including a built-in function generator and three-phase generator, prioritize safety through low voltage operation and rely on self-resetting circuit breakers for reliable overload protection. Experience a secure and seamless learning journey to master the essentials of vehicle electrical systems.

Course Concepts:

          • Introduction to parallel and series circuits
          • Using multimeters
          • Using oscilloscopes
          • How a relay works
          • Investigation of transistor circuits
          • Experiments on a resistor in series with a ventilation system
          • Measuring resistance

To learn more about this program, check out our detailed brochure for more information!

Manufacturer: Lucas-Nuelle
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