Discussion in 'DC Control' started by paul_l, Dec 21, 2015.
Here is a quick circuit diagram for a 12V supply
Alternatively, you can use a PC power supply.
Two main types available AT (old) & ATX.
I would not recommend the AT power supplies as they normally have an external mains switch.
The ATX power supplies keep the mains within the box.
They are fitted with either a 20 or 24 way connector
The colour coding on the above diagram normally corresponds with the wire colours, although I have seen different wire colours used !!!
To get the supply to work connect the PS_ON# wire to COMMON. If you do this via an off / on switch you can have a remote off/on switch. Note just like a PC, it will consume some power while in standby mode.
The +12V DC, +5V DC and +3.3V DC lines will provide significant amounts of current, and may be advisable to install current protection for the circuit.
Provides the following output currents
+3.3V 26A; +5V 27A;+12V 22A