Assembly instructions
o Check each box as that step is completed.
o Step 1: Attach the brass rod. Check the parts-placement diagram (Figure E) for location.
Clean the brass rod with sandpaper or steel wool. Bend one end of the rod slightly less than 90 degrees. Lay the circuit
board on the table with foil side up. Place the hooked end of the brass rod over the large hole near the handle (see Figure D).
Make sure the rod extends out over the handle area. Solder the rod to the board on the foil side. The end of the brass rod
should not extend past the marked oval on the handle. This is your contact point. If it does extend beyond this point, cut the rod
off just before the end of the oval.
o Step 2: Solder the IC socket to the board.
The socket for the IC is placed on the component (non-foil) side of the board first. Do not plug the IC into the socket now.
After all the other parts are soldered to the board you will be instructed to plug the IC into the socket (Step 13). Identify the
notched end of the socket. Insert the socket into the circuit board. Turn the board over and gently spread the pins on the socket
so they make contact with the foil side of the board. Solder the socket in place.
o Step 3: Place C1 (0.01-mF capacitor) on the component side of the board.
Thread the wire leads on C1 through the holes on the board. (See Figure F.) Solder the wires onto the foil side of the
board. Cut the extra wire off above the solder joint.
o Step 4: Place R2 (10-kilohm resistor) on the component side of the board.
Prepare resistors for mounting by bending each lead (wire) of the resistor to approximately a 90° angle. (See Figure G.)
Insert the leads into the board holes and bend them over to hold the resistor in place. Solder the leads to the foil and trim them
close to the foil.
o Step 5: Place C3 (220-mF, 35-volt
electrolytic capacitor) on the
component side of the board.
This capacitor has a plus (+) side
and a negative (–) side. The (–) side is
placed on the board facing away from
the handle. (Notice the + sign printed
on the circuit board at this location.)
Insert the capacitor leads into the
circuit board holes, solder them in
place and trim off the extra wire.
o Step 6: Place C2 (0.01-mF capacitor)
on the component side of the
board.
Thread the wire leads from C2
through the holes on the circuit board.
(See Step 3 and Figure F.) Solder the
wires onto the board. Cut the extra
wire off above the solder joint.
Figure C—Schematic diagram of
a code-practice oscillator
o Check each box as that step is completed.
o Step 1: Attach the brass rod. Check the parts-placement diagram (Figure E) for location.
Clean the brass rod with sandpaper or steel wool. Bend one end of the rod slightly less than 90 degrees. Lay the circuit
board on the table with foil side up. Place the hooked end of the brass rod over the large hole near the handle (see Figure D).
Make sure the rod extends out over the handle area. Solder the rod to the board on the foil side. The end of the brass rod
should not extend past the marked oval on the handle. This is your contact point. If it does extend beyond this point, cut the rod
off just before the end of the oval.
o Step 2: Solder the IC socket to the board.
The socket for the IC is placed on the component (non-foil) side of the board first. Do not plug the IC into the socket now.
After all the other parts are soldered to the board you will be instructed to plug the IC into the socket (Step 13). Identify the
notched end of the socket. Insert the socket into the circuit board. Turn the board over and gently spread the pins on the socket
so they make contact with the foil side of the board. Solder the socket in place.
o Step 3: Place C1 (0.01-mF capacitor) on the component side of the board.
Thread the wire leads on C1 through the holes on the board. (See Figure F.) Solder the wires onto the foil side of the
board. Cut the extra wire off above the solder joint.
o Step 4: Place R2 (10-kilohm resistor) on the component side of the board.
Prepare resistors for mounting by bending each lead (wire) of the resistor to approximately a 90° angle. (See Figure G.)
Insert the leads into the board holes and bend them over to hold the resistor in place. Solder the leads to the foil and trim them
close to the foil.
o Step 5: Place C3 (220-mF, 35-volt
electrolytic capacitor) on the
component side of the board.
This capacitor has a plus (+) side
and a negative (–) side. The (–) side is
placed on the board facing away from
the handle. (Notice the + sign printed
on the circuit board at this location.)
Insert the capacitor leads into the
circuit board holes, solder them in
place and trim off the extra wire.
o Step 6: Place C2 (0.01-mF capacitor)
on the component side of the
board.
Thread the wire leads from C2
through the holes on the circuit board.
(See Step 3 and Figure F.) Solder the
wires onto the board. Cut the extra
wire off above the solder joint.
Figure C—Schematic diagram of
a code-practice oscillator
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