Mount the light switch (a) just like you did for the test
plates on the front of the shoe box. Mount it in the regular
way so that ON is UP and label the box clearly. Turn light
switch OFF before continuing.
Pierce a hole with a large nail or pencil for the shaft of the
potentiometer (b), and a smaller hole for the tab on the
side of the potentiometer (the tab keeps the potentiometer
from rotating when you turn the switch). Remove the nut
and washer from the base of the potentiometer shaft, in-
sert the shaft into the hole from the inside of the shoe box.
Trim the excess cardboard around the shaft with a knife.
Replace the washer, nut, and tighten securely.
Attach the knob (c) to the shaft. Use a very small screw
driver or pointed knife to tighten.
Pierce holes in the box with a pin for the .1 microfarad
capacitor (d) and the .0047 microfarad capacitor (e). Push
the wires of each capacitor through the holes from the
outside. When the ceramic part is almost touching the
box, bend the wires inside to keep it in place. The ca-
pacitors look very much alike, so be careful not to switch
them (open one capacitor package at a time and put the
part directly in place, double checking the diagram).
Pierce the holes for the transistor (f). Examine the tran-
sistor. Hold it in your left hand with the flat side on the
left and wires pointing up at you. Notice that the center
wire is the “base”. Bend the base wire away to the left
slightly so you will be able to insert the transistor into the
triangle of holes. A diagram on the transistor package tells
you that the top wire is the “collector” and the bottom
wire is the “emitter”. Insert the transistor from the outside
of the box so each wire goes where it is supposed to, and
bend the wires sideways to secure.
Pierce seven holes for the transformer (g). There should
be 2 wires on one side and 3 on the other. All wires
