Can you use an old PC power supply to power your CCTV cameras? Well lets see cameras use a 12 volt dc current and PC power supplies put out both 5 and 12 volt dc current. So how can I take advantage of this factor? Well the old AT PC are best to use as they did not have an on-board circuit looking for power on command, from the motherboard. However the command can be over come by jumpily the circuit.. Being most do not have a supply of the old At PC power supplies anymore. And the ATX power supply remains very good I'm going to show how to take advantage of the them only. Note: The P4 version of the ATX power supply does not effect this instructional. as the extra plug was used for power supply to CPU fan speed control. The ATX connector to the PC motherboard was the same.
First notice: Do Not go from smaller size wire to larger size wire ever. 10 is larger than 12 and 12 is larger that 14. Wiring numbers of size are not the same as shoe sizes. So do not connect wires to supply of power with a wire size 14 using wires size 12. `12 is larger Output connections can not be higher than the size wire of the output device.
The reason is due to the increase flow of electrons on the smaller wire. This increases the temperature on the smaller wire and can cause a fire. 12 connected to a 14, 14 overheats.
In this instructional we will be using parts from faulted power supplies most used and ATX PC power supply via the use of a terminal connection bar.
