BICYCLE REAR
FLASHING LIGHT
INSTRUCTION SHEET
Schematic Diagram
PCB Layout
Construction Method
1. Check your P.C.Board carefully for damage to the tracks. A Circuit Tester or multimeter will help check that there are no broken tracks.
2. Identify the resistors by their
colour bands or with a multimeter. Bend the legs with long-nose pliers to
match their holes and push them into place against the surface of the board.
Solder in place - refer Soldering
Technique .
3. Check the
values and locations of the capacitors. These are polarised and must be
inserted in the correct orientation. Solder in place.
4. The two transistors have a flat on the body. Solder them with the flats as the drawing shows.
5. The LEDs are also polarised. See diodes. The short leg is the 'K' leg. Solder
in place.
6. Insert and solder the pins for the switch. Wire
is included to remotly mount the switch. See Tinning Wire .
7. Insert the battery holder from the TRACK side,
leaving access to solder. Solder in place.
Trouble Shooting
Troubleshooting will involve careful checking of locations
and polarity of all components. Re-solder all joints and check to
make sure you have not bridged across
between any two adjacent component legs. The end
of a broken hacksaw blade sharpened on
an emery wheel is a good tool for cleaning between soldered
joints.