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modules:wamod_power_supply

WAMOD PSU

Description/Usage

Just a humble eurorack power supply. By default provides the usual +/-12V, but supports +5V with a few additional components. From the build doc: “The power supply is very conventional. The PCB receives 12VAC from a plugpack/wallwart. The 1N4004 diodes split this into positive and negative waveforms. The 4700uF capacitors then smooth out these waves. The 7812 and 7912 regulators then convert the rectified & smoothed signals to +12V DC and -12V DC and these are fed to the connectors to be distributed to your lovely modules.”

You'll know if it's working correctly if both LEDs on the 12VAC side of the board light up. If one lights up, you are probably using DC.

You will need a 12V AC wallwart to power it. You will want ~1A per row. Will happily work with larger supplies like the ones used for outdoor lighting.

It is possible to power more than one PSU from a single wallwart, but make sure that the polarity of the wires is the same on every PSU, or you will make fires happen.

If your modules are misbehaving, power is the first thing to check. Just because things turn on does not mean you have enough power for your system.

You can safety connect multiple modules to a single cable/port or use bus boards to make connecting larger numbers of modules easier.

* insert cable making tutorial here*

Specs

Power draw: HP: 0 ( not panel mount)

SMALL PSU = USD8 (ONE 16 PIN CONNECTOR)

LARGE PSU = USD15 (SEVEN 16 PIN CONNECTORS)

Inputs

12V AC plug

Outputs

7 shrouded 16 pin power sockets.

DIY

Calibration

Instructions for calibration here

Modifications

* Insert steps for 5v output here*

The 12VAC holes are almost the perfect size for a little 2 way screw terminal, like this one at jaycar, which makes installing/moving the power supply between cases easier. Just make sure you use large enough gauge wire for the terminals to grip onto.

Power Bricks

Here is a list of WA/AU local places to find power bricks. As a general rule, you'll need about 1A per 84hp row.

Altronics

Jaycar

modules/wamod_power_supply.txt · Last modified: 2019/01/30 11:19 by donald_dasher