[[Category:Ongoing_ProjectsClosed_Projects]] = Status =On going...
= Description =
Create a lab Power Supply with from an [https://en.wikipedia.org/wiki/Power_Supply_Unit_%28Computer%29 ATX PSU].
= Components =
= Those interested People involved =
*Fred
*Speredenn
http://www.sinux.net/2011/09/alim-atx.html
http://www.instructables.com/id/How-To-Build-A-Power-Supply-For-Electronics-Hobby/
= Pictures =
[[File:PSU_4.JPG|200px]]
= Update : PSU with regulate output =
It is a better idea to have the ATX set up in a box and to use the ATX connector to connect to the banana plugs. Basically, it is then possible to have the 5 usual plugs (GND, +3.3, +5, +12, -12) and add a regulated output (0-12V). The visualization for that regulated output can be analogical. However, if the system uses a micro-controller (see Buck converter below), a digital screen could be an option. That would also be great to have a current limiter on that regulated output.
That would be great Linear regulators are excluded for this improvement because they dissipate way to have much energy. A [https://en.wikipedia.org/wiki/Switched-mode_power_supply switch-mode power supply] approach is favored. So far, a current limiter on that regulated output also[https://en.wikipedia.org/wiki/Buck_converter Buck converter] is considered.
It might be possible = Options =I suppose it is good to use have at least 2 LEDs, a LM317 for red and a green, each with a 220Ω resistor in series. turning on the voltage controlPSU can be done with a SPDT switch, that is: ''on1 - on2.''* red LED is between ''on1'' and purple (standby 5V)* green LED is between grey (power OK) and ''on2'' (or GND, for that matter)* green cable is soldered onto ''on2''* middle point of the SPDT switch is on GND
We can use an ATX 24-pin connecor adapter to connect this has the following consequences:* when PSUis on mains and switched off, the red LED is on* when flipping the switch, PSU turns on ; after about a second the green LED lights, indicating all is good. I feel like wasting time, so here's some crappy ASCII art for this: http green----------------- (grn) | grey----R----|>|--o o--------ON2 | / ←{ this here is the SPDT switch } GND---------------o--------o/ (red) purple--R----|>|--------------ON1 = Components = {| class="wikitable" style="text-align:left;"|+ |-! scope=col | Shop! scope=col | Article N°! scope=col | Description! scope=col | Unit price (CHF)|-|Distrelec|[https://tinyurlwww.comdistrelec.ch/6bza3o7c%C3%A2ble-alimentation-atx-20-cm-24p-nt-20p-mb/maxxtro/aa-150-0613/679017/informatique/fr 679017]|24-pin (NT) – 20-pin (MB)|12.-|-|Distrelec||[https://www.distrelec.ch/borne-ronde-%C3%B8-4-mm-gris-clair/ritel/24-15-001/100536/fr 100536]|Laboratory socket light-gray ø 4 mm|4.-|-|}