Newbie assembly notes

Hugh Keir hugh at sol.co.uk
Thu Jan 31 19:16:04 GMT 2002


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I have little experience soldering components to circuit boards and for
those who are similarly lacking in experience, here is a list of the =
things
that I did not know and had to find out in order to put the components =
in to
the correct circuit position on the circuit boards.

I have to warn you that I have not tested the circuit, so can not as yet
confirm whether I am correct.

All the resistors came pre identified and stuck to a sheet of paper all =
you
have to do is pull it off the paper and stick it in the correct location =
on
the circuit board. All of the colour codes are also listed under each
resistor and all of them matched the description given you can solder =
them
in any way round, although the guy I spoke to said it was good form to =
have
all the gold bands going the same way as it makes it easier to read them =
if
you are checking the circuit later.

I then used the descriptions on the digikey part's list
ftp://diy-efi.org/pub/diy_efi/project_files/diy_wb1/WBO2DigikeyBOM.txt =
to
identify the remaining components.

I thought I knew what a capacitor looks like, but there are several
different types as follows:

The first surprise was that the LED isn't just a light but it's also a =
diode
and has to go in the correct way round, close inspection will show the =
short
leg lines up with a flat on the rim of the LED and this aligns to the =
double
bar end on the circuit board graphic.

D1,D6,D7,D10        these are the smallest copper colour and are aligned
black end to the double lined graphic.

D3  big black one, needed to ream the holes to make it fit.

D4,D9  these are the larger copper colour

D8  LM 385 black three legs cant go wrong

D11,D5   LM 431 black three legs cant go wrong

Next surprise is the capacitors - lots of different types.
For the ones that have a long and a short leg, the long leg is +=20

 C12                    3.3uf,50v,elec,radial       blue cylinder

 C1,C6,C16        10uf,25v,elec,radial         blue cylinders

C5                      22uf,25v,elec,radial          blue cylinder

 C11                   47uf,16v,elec,radial         blue cylinder

 C3,C4               10uf,25v,tantalum,radial        brown lump round

 C7                     0.1uf,10%,100v,poly,     brown lump small =
rectangle

C10                    1uf,10%,100v,poly,radial   brown lump big =
rectangle

C2                      0.1uf,25v,cer disc,radial         orange plate

 C8,C9,C13,C14         0.1uf,50v,mono cer    yellow small on strip


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<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DVerdana size=3D2>I have little experience soldering =
components to=20
circuit boards and for<BR>those who are similarly lacking in experience, =
here is=20
a list of the things<BR>that I did not know and had to find out in order =
to put=20
the components in to<BR>the correct circuit position on the circuit=20
boards.<BR><BR>I have to warn you that I have not tested the circuit, so =
can not=20
as yet<BR>confirm whether I am correct.<BR><BR>All the resistors came =
pre=20
identified and stuck to a sheet of paper all you<BR>have to do is pull =
it off=20
the paper and stick it in the correct location on<BR>the circuit board. =
All of=20
the colour codes are also listed under each<BR>resistor and all of them =
matched=20
the description given you can solder them<BR>in any way round, although =
the guy=20
I spoke to said it was good form to have<BR>all the gold bands going the =
same=20
way as it makes it easier to read them if<BR>you are checking the =
circuit=20
later.<BR><BR>I then used the descriptions on the digikey part's =
list<BR><A=20
href=3D"ftp://diy-efi.org/pub/diy_efi/project_files/diy_wb1/WBO2DigikeyBO=
M.txt">ftp://diy-efi.org/pub/diy_efi/project_files/diy_wb1/WBO2DigikeyBOM=
.txt</A>=20
to<BR>identify the remaining components.<BR><BR>I thought I knew what a=20
capacitor looks like, but there are several<BR>different types as=20
follows:<BR><BR>The first surprise was that the LED isn't just a light =
but it's=20
also a diode<BR>and has to go in the correct way round, close inspection =
will=20
show the short<BR>leg lines up with a flat on the rim of the LED and =
this aligns=20
to the double<BR>bar end on the circuit board=20
graphic.<BR><BR>D1,D6,D7,D10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
these are=20
the smallest copper colour and are aligned<BR>black end to the double =
lined=20
graphic.<BR><BR>D3&nbsp; big black one, needed to ream the holes to make =
it=20
fit.<BR><BR>D4,D9&nbsp; these are the larger copper =
colour<BR><BR>D8&nbsp; LM=20
385 black three legs cant go wrong<BR><BR>D11,D5&nbsp;&nbsp; LM 431 =
black three=20
legs cant go wrong<BR><BR>Next surprise is the capacitors - lots of =
different=20
types.
<DIV>For the ones that have a long and a short leg, the long leg is + =
</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;C12&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.3uf,50v,el=
ec,radial&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
blue cylinder</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;C1,C6,C16&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
10uf,25v,elec,radial&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;blue=20
cylinders</DIV>
<DIV><BR>C5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
22uf,25v,elec,radial&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;blue=20
cylinder</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;C11&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
47uf,16v,elec,radial&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
blue=20
cylinder</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;C3,C4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;=20
10uf,25v,tantalum,radial&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; brown =
lump=20
round</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;C7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
0.1uf,10%,100v,poly,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;brown lump small=20
rectangle</DIV>
<DIV>&nbsp;</DIV>
<DIV>C10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
1uf,10%,100v,poly,radial&nbsp;&nbsp; brown lump big rectangle</DIV>
<DIV>&nbsp;</DIV>
<DIV>C2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
0.1uf,25v,cer =
disc,radial&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; orange=20
plate</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;C8,C9,C13,C14&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =

0.1uf,50v,mono cer&nbsp;&nbsp;&nbsp; yellow small on strip</DIV>
<DIV>&nbsp;</DIV></FONT></DIV></BODY></HTML>

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