This book is a reference work with practical facts and detailed explanations. The author has developed concise practical explanations and approximate calculations even for complex processes or formulas, without oversimplifying the representations. The simulation program Multisim, which offers numerous components and extensive measuring instruments, has been chosen as a starting point. This provides a practical technical book and reference work for school, university, and professional development. The book is divided into six chapters:

• Measuring Instruments: Working with multimeters, function generators, and dual-channel oscilloscopes
• Diodes: Semiconductor rectifiers, bridge rectifiers, switches, voltage limiters, Z-diodes, light-emitting diodes, 7-segment displays, bar graph displays, and optocouplers
• Amplifier Circuits: Small signal amplifiers, single and two-stage amplifiers, power amplifiers for classes A, B, and AB.