Sultan of Tone v4.1
6
Power section
This board has a built-in charge pump which can feed the board with 18V. This can be made into a
switchable option! If you look at the 3 power pins (marked 9V/Vout/18V), you can use a 3 pin male
header and a shunt to choose between the two voltage (9V/18V). If you short the left 2 pins you will
feed the effect with 9V. If you short the right 2 pins, you will feed the board with 18V. Be careful not
to connect all 3 pins at the same time! This will short the power section with all dramatic
consequences. Of course you can use a SPDT switch instead of a 3 pin male header to make the
power option externally switchable.
IC3 is the heart of the charge pump. You can use a LT1054 or a ICL7660s.
o
LT1054
: Do not connect pads X and Y.
o
ICL7660s
: Short pads X and Y with a spare piece of lead wire.
Note:
Take special care building the power section. If the IC (LT1054/ICL7660s) heats up then check
the polarity of the capacitors (C22,23 and 24) and check that the power selection pins do not short all
3 together.
If you do not want the 18V option and stick to the standard 9V option, then skip D14, D15, C22, C24,
C25 and IC3. You will also need to short the
9V
and
Vout
pads on the power pins (as depicted in the
left image above)
Содержание Sultan of Tone
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