General bill of materials
For the Bergfotron
modules I try to use standard, readily available parts as much as
possible. Therefore, I see no sense in producing a separate bill of
materials for each module. Instead, I have compiled this list of
parts that you should have access to. These are the parts that I
consider essential for any synth DIY and you will need them sooner or
later. It's a good idea to have a supply of these parts in your hobby
room / workshop.
Some modules will need parts that are not on
this list. These special parts are listed in the instructions for
each module (only for the AMORE system).
Semiconductors
TL062 Dual
op-amp, low power
TL072 Dual op-amp
MC4558 Dual
op-amp, slow
TL064 Quad op-amp, low power
TL074
Quad op-amp
LM393 Dual comparator
CD4011 Quad
NAND gate
CD4013 Dual D-type flip-flop
CD4051
8-way analog switch
CD4053 Triple 2-way analog
switch
CD4066 Quad analog switch
CD4584 Hex
Schmitt trigger
CA3080
Operational transconductance
amp
LM13600
or 13700 Dual operational
transconductance amp
The
above OTA ICs can be somewhat difficult to find. The LM13700 can be
used instead of the LM13600. Both of these and the CA3080 are still
available from specialist suppliers. One of them is Das
Musikding in Germany. They are not expensive, so buy some extra
for future modules while you're ordering!
CA3046
Transistor array
BC550C Small signal NPN transistor (marked
TUN in component placement plans)
BC560C Small signal PNP
transistor (marked TUP in component placement plans)
BF245A
(or equivalent) Universal N-channel FET
2N4391 (or
equivalent) Fast, low Rds N-channel FET. The J112 and the
2N5485 work well too.
2N7000 N-channel MOSFET
1N4148
Small signal diode (marked DUS in component placement plans)
1N4002
Power diode
Resistors
1 % metal film resistors. The new 0,4 watt types are preferable, as they are smaller and cheaper too. 0,6 watt types will do too. You need the entire E24-series from 100 ohms to 1 megaohms. Above and below that, the E12 series will do. Buy a belt of 100 for every resistor value you need for the project that you're currently working at. In that way, you will eventually have the entire series but don't have to buy them all at the same time.
Trimmers
Horizontal cermet
trimpots with 100 ohms, 1 kohm, 10 kohm, 100 kohm
Vertical 15 turn
cermet trimpots with 1 kohm, 10 kohm, 100 kohm
Capacitors
Ceramic caps 4.7 pF,
10 pF, 15 pF, 22 pF, 33 pF, 47 pF.
Polypropylene caps are
preferred in the range 100 pF to 33 nF.
Polyester caps from 47 nF
to 1 µF.
Tantalum electrolytics from 2.2 µF to 47
µF.
Ordinary electrolytics from 100 µF and up.
Misc.
3S1 ferrite beads (5
x 10 mm) for HF noise suppression.
2 x 20 pin angled circuit board
connector (2,54 mm pitch).
Latest update 2011-10-10