The parts used in this book are largely through-hole. You can salvage 90% of the components from old VCRs, computer power supplies, or even cheap Amazon component assortments.
For a hobbyist on a budget, this was the most valuable section. It included designs for: Signal generators (sine, square, and triangle waves). Transistor testers. Capacitance meters. Logic probes. 3. Power Supplies elektor 305 circuits
: It offers structured guidance and "best practice" procedures to help newcomers master core electronic features. The parts used in this book are largely through-hole