Doides have a important orientation, marked with a black stripe. This stripe is white on the PCB.
Place the four diodes in
D1
,
D2
,
D3
and
D4
.
IC sockets
Take the tube or foam with the
three
IC sockets and the IC's. There is
one
with 16 pins and
two
with 14 pins!
These IC-sockets are to make the placement (and possible removal) of the IC's easier.
Take out the
two
IC-sockets. Attention! These sockets have a direction. See the half moon-shaped gap?
On the PCB you can see this marking as well. Place the 16-pin IC socket in
IC2
.
Flip over the PCB and solder two legs, on in the upper row, one in the lower row, diagonally from each other.
Flip the PCB back to the other side to check if the IC-socket is flat to the PCB.
If not, push the socket to the PCB and reheat the two solderd legs. It should click to the PCB.
Place the 14 pin IC sockets in
IC1 and IC3
and use the same method as before to solder it in.
Solder all remaining legs.
Capacitors!
There are a lot of capacitors in the kit.
They determine the frequency range of the oscillators, stabilise the power and outputs.
We start with the
four
small light yellow capacitors.
C1, C2, C5 en C6
are 100nF (.1K63)
C3
= 680pF (you can also use a 100pF)
C4
= 220nF / 100nF (.22J63)
Now for the bigger capacitors:
These parts have a
polarity
. The long leg is the PLUS, The short leg is MINUS.
There is also a MINUS symbol printed on the side.
The value of these components is printed on the side as well.
Start with the
one
47uF.
(take care to get the right one, there are also
four
4.7uF
capacitors!)
Place the
one
47uF
capacitors in
C11.
Long leg goes into the PLUS!!
Now we do the three
4.7uF
. These go in
C7
,
C8, C9
and
C10
.
Transistoren
Place the four transistors in
Q1
,
Q2
,
Q3
and
Q4
.
These parts are heat sensitive, so make sure that you don't overheat them.
