High Frequency Apparatus Page 130

130 HIGH FREQUENCY APPARATUS wwww COPPER TUBES GROUND Fig. 4. Diagram of connections for the entire outfit Fig. 4 gives a complete wiring diagram for the entire group of apparatus. The connecting wires should be of heavy stranded cable which may conveniently be made by grouping four or five strands of heavy incandescent lamp cord together and binding them into a cable with tape or fishline, and soldering the ends into suitable lugs. The variable connections to the turns of the primary coils may be clips of the conventional variety. The drawing suggests a clip of suitable design. The ground connection is absolutely essential and care should be taken to see that the ground terminal is connected with the nearest water pipe whenever the apparatus is to be set in operation.