Frequency Central FC Power Manual

Build documentation for:
FC Power
Frequency central
Rev 1 / September 2013
FC Power has been designed as an inexpensive solution for small Euro systems or stand-
alone synths. It uses easily available parts, all of which you can source from Tayda for less
than £5.00 GBP.
I recommend a 1000mA 12VAC wallwart for best results. This should give you ~500mA at +/-
12V and 100mA at +5V. Alternatively, you can get +/-15V by replacing the 7812 and 7912
with 7815 and 7915.
Please note that FC Power will not work from a DC wallwart. As the wallwart is AC, you will
need to isolate it from the metalwork of your enclosure, I’d recommend this type of power
input.
3mm red LEDs indicate the status of each power rail. Polarity and short circuit protection is
built in.
If you don’t need +5V you can leave out the 4 components associated with this (see photo
below).

You can use FC Power’s header to run a single module for testing, or you can hook it up to a
flying bus board, Doepfer bus board or DIY stripboard bus board. Pads are also provided for
direct hookup to the bus board of your choice without the need for a header.
Please observe the correct polarity for all voltage regulators, diodes and electrolytic
capacitors:
4700uF caps polarity are indicated by a + next to the +ve pad.
100uF caps polarity are indicated by a square pad for +ve.
1N4004 polarity are clearly shown on the PCB.
3mm red LEDs polarity are indicated by a square cathode pad.
…see photos for 7812, 7912 and 78L05.
Bill of materials
(click the links!)
1K x 3
100nF x 2
100uF 35V x 3
4700uF 25V x 6
7812 x 1
7912 x 1
78L05 x 1
1N4004 x 6
3mm red LED x 3
Heatsink x 2
Power header
M3 bolt x 2

+/-12V only +/-12V plus addition of 5V supply
(note missing components): (note polarity of 78L05):
RDH 15th September 2013
http://www.frequencycentral.co.uk/