24
g. Now that we’ve made the optocouplers we can install them. The leads need to be bent 90
degrees, but it matters which way you bend them for them to fit in the proper orientation.
If you put the opto in backwards the tremolo effect will not work. Note the PCB graphics
indicate where the LDR and LED are intended to go. On your optocoupler, the LED has one
long lead and one short lead. The long lead of the LED goes into the hole with the square
pad. Note which side of the optocoupler needs to be up as you bend the leads down in
order for it to fit into the holes properly (60). Grip the leads with your pliers as shown (61)
and bend them down 90 degrees with your fingers (62). Bend the LDR’s leads in the same
way, holding with pliers and bending with fingers (63,64). Repeat for the other optocoupler.
60
61
62
63
64
65
