Difference between revisions of "Power Supply with an ATX PSU"
| Line 79: | Line 79: | ||
It might be possible to use a LM317 for the voltage control. | It might be possible to use a LM317 for the voltage control. | ||
| + | |||
| + | = Options = | ||
| + | I suppose it is good to have at least 2 LEDs, a red and a green, each with a 220R in series. turning on the PSU can be done with a SPDT switch, that is: on1 - on2. | ||
| + | * red LED is between on1 and purple (standby 5V) | ||
| + | * green LED is between on2 and grey (power OK) | ||
| + | * green cable is soldered onto on2 | ||
| + | * middle point of the SPDT switch is on GND | ||
| + | |||
| + | this has the following consequences: | ||
| + | * when PSU is 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. | ||
= Components = | = Components = | ||
Revision as of 19:53, 24 October 2011
Contents
Status
On going...
Description
Create a lab Power Supply with an ATX PSU
Components
| Shop | Article N° | Description | Unit price (CHF) |
|---|---|---|---|
| Distrelec | 100538 | Laboratory socket black ø 4 mm | 4.- |
| Distrelec | 100540 | Laboratory socket red ø 4 mm | 4.- |
| Distrelec | 100546 | Laboratory socket green ø 4 mm | 4.- |
| Distrelec | 100544 | Laboratory socket yellow ø 4 mm | 4.- |
| Distrelec | 100542 | Laboratory socket blue ø 4 mm | 4.- |
Price
Depends of connectors number and of availability of an old working ATX PSU.
Voltage
- +5VDC
- +3.3VDC
- +12VDC
- -12VDC
Those interested
- Fred
- Speredenn
Links
http://www.semageek.com/diy-transformer-une-alimentation-atx-en-alimentation-de-laboratoire/
http://pinouts.ru/Power/atxpower_pinout.shtml
http://www.sinux.net/2011/09/alim-atx.html
Pictures
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.
That would be great to have a current limiter on that regulated output also.
It might be possible to use a LM317 for the voltage control.
Options
I suppose it is good to have at least 2 LEDs, a red and a green, each with a 220R in series. turning on the PSU can be done with a SPDT switch, that is: on1 - on2.
- red LED is between on1 and purple (standby 5V)
- green LED is between on2 and grey (power OK)
- green cable is soldered onto on2
- middle point of the SPDT switch is on GND
this has the following consequences:
- when PSU is 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.
Components
| Shop | Article N° | Description | Unit price (CHF) |
|---|---|---|---|
| Distrelec | 679017 | 24-pin (NT) – 20-pin (MB) | 12.- |
| Distrelec | 100536 | Laboratory socket light-gray ø 4 mm | 4.- |
