WIRE FOR COILS

Radio Record, Volume I, Issue 26, 13 January 1928, Page 14

WIRE FOR COILS

In winding radio coils, the radio beginner often is puzzled as to how to Froceed if he doesn’t happen to have Wire of exactly the spccificd size on hand with which to wind the tuning units. There is no migie in wire sixes Within rather wide limits. If the specifications for a given coil call for No. 22 double silk covered wire and you haven’t that size on hand, use the nearest size to it. Of course, if you use different wire you will haye ~ to

change the number of turns to get exactly the same results. Suppose No, 22 double silk covered wire is specified. If you use cotton covered wire of the same size, a few more turns will be required {fo get the saine results. If it is single silk covercd wire, less wire Will be needed because of the closer spacing of the turns. Larger wire reqvires more turns and smaller wire fewer turns, The diameter of a coil also can be changed if you find it necessary. Reducing the diaineter will require more turns of wire and increasin;z it will allow you to cut down the number of turns. Bearing these facts in mind will help you to adjust your coils to the required wave-length. The shorter the wave lengths you desire to cover the fewer turns of wire needed.