Radio and Electronics Cookbook

28

A simple crystal set

Introduction

There are many designs of crystal set – they are all ‘simple’, and even the most seasoned radio amateur will build one of these every so often because it is something that never ceases to amaze! Although using modern components, the design is a period piece!

Design and construction

The circuit diagram of Figure 1 shows the simplicity of the circuit. The prototype was constructed on a wooden baseboard with an aluminium front panel, although this could be made of wood if you prefer.

Figure 1 Circuit diagram of the crystal set

Winding the coil always causes the most groans but when finished, gives the most ...