Flight of Harmony Power Bare-Bones User Manual

flight of harmony

POWER Barebones Pack

~v1.0~

+

+

+

+

g.1 g.2

Components

1

Assembled POWER PCB

1*

12VAC 1000mA wall adapter

1

13” 18AWG DC power harness

1

DPDT power switch with hardware

1

2.1mm x 5.5mm x 9.5mm barrel-style AC jack with hardware

1

MTA156 4-pin 22AWG IDC connector (switch)

1

MTA156 2-pin 22AWG IDC connector (AC jack)

1

Red 5mm LED (V+)

1

Yellow 5mm LED (V-)

2

Molex SL-series 0.1” 2-pin housing (PCB end)

2

Molex SL-series 0.1” crimp terminals (PCB end)

2

Molex KK-series 0.1” 2-pin housing (LED end)

4

Molex KK-series 0.1” crimp terminals (LED end)

* Only part of standard PWBP

2/7

Specications

Module width 10 h.p.
Input voltage 12VAC
Maximum current output
Output voltage

IV+= 1A IV-= -1A

±12VDC

What is it?

This one is pretty straightforward: a power supply for your modular
synthesizer rig. No sweet spots, no easter eggs, it just makes juice.

POWER was designed with portable racks in mind –– shallow depth,
reduced weight, and keeping the mains transformer outside of the case to eliminate
related noise and heat –– but it can be used to supply any compatible system.

Usage

The standard AC wall adapter (if you purchased the standard unit) is
rated for 1 Ampere (A. K. A. 1 Amp, 1A, 1000mA), as is the POWER module
itself. For best performance – and this applies to ALL electronics, by the way – you
should never run POWER at its maximum rating. A 60% load (600mA) is the
practical limit for best performance.

If you need/want to run it up to 75% or 80%, a greater capacity
adapter is needed to maintain performance. Adapters get hotter as more power
is drawn from them, which increases the internal resistance and thusly reduces the
performance. A 1500mA rated adapter is recommended.

The adapter plug must be a 2.1mm x 5.5mm x 9.5mm barrel-type plug.

Input Connections

AC jack: CN1 is for the AC adapter jack. Tip wire to the top pin, sleeve

wire to the bottom pin (as shown in g. 1).

Power switch: CN2 is for the power switch. When the switch is turned

ON, pin 1 is connected to pin 4, pin 2 is connected to pin 3.

Output Connections

LED+: From the front side, this is the header next to R3 and is the +12V
LED (red). Anode (longest leg of the LED) to the top, cathode (shortest leg of the
LED) to the bottom.

LED–: From the front side, this is the header next to R4 and is the -12V LED
(yellow). Anode (longest leg of the LED) to the top, cathode (shortest leg of the LED)
to the bottom.

3/7