Server PSU Based Radio Power Supply: Difference between revisions
From SUWS-wiki
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* Modify PSU to boost voltage 12v->13.8v (or as close as possible) | * Modify PSU to boost voltage 12v->13.8v (or as close as possible) | ||
** This is possible using a resistor between the 12v sense-return pin and ground. 260Ohm resistor suggested. | ** This is possible using a resistor between the 12v sense-return pin and ground. 260Ohm resistor suggested. | ||
* PCB designed (See Github) | |||
=== Parts List === | === Parts List === | ||
Revision as of 20:40, 31 May 2017
| Server PSU Based Radio Power Supply | |
|---|---|
| |
| Status | In Progress |
| Project Lead | User:Stealthbird97 |
Server PSU Based Radio Power Supply
A low cost, high current power supply for Amateur Radio utilising a Server PSU.
Designs are available at Github
Feature Ideas
- Near 13.8VDC Output, 47 A (Exact specs to be determined)
- Various Fan Control Options.
- Distribution (2 Fused Anderson Powerpole connectors)
Tasks (To Do)
- Design Interface (There are some that already exist, however most of this use ATX 6pin connectors or other less useful connectors - if you can actually find the designs)
- Look into reducing EMI
Tasks (Completed)
- Identify maximum voltage obtainable from supply.
- OVP cuts in at about 13.9v, however OVP protection will trip if a 1A load is suddenly attached by 13.75v.
- Modify PSU to boost voltage 12v->13.8v (or as close as possible)
- This is possible using a resistor between the 12v sense-return pin and ground. 260Ohm resistor suggested.
- PCB designed (See Github)
Parts List
- 1x HP DPS-600PB Server Powersupply
- 1x HP DPS-600 Distribution Board PCB by M0YCH
- 1x Amphenol FCI 51760-10201202AALF Connector
- 1x Vishay / Sfernice 1k Trimmer T93YA102KT20 (Fan Control) (R4)
- 1x Vishay / Sfernice 5k Trimmer T93YA502KT20 (Voltage Control) (R3)
- 1x LM34 (Fan Control) (IC1) (Optional)
- 4x Keystone 3522 Fuse Holder
- 2x 330ohm though hole 0.25w
- 2x 3mm LED
- 2x 0.1u Capacitor
- 2x black 45A Powerpole Housing
- 2x Red 45A Powerpole Housing
- 4x 45A Powerpole PCB Contacts
Complications
- Original PSU was going to be a Dell POWEREDGE 2950 Redundant Power Supply however upon testing this supply, voltage would not rise above 12.2v and would drop to unusable voltages under load.
Notes/Resources
- http://www.ajvde.nl/forumfoto/Server%20Power%20Supply%20Modifications.pdf
- https://www.rcgroups.com/forums/showthread.php?1005309-A-simple-high-quality-12Volt-100Amp-Power-Supply-Part1/page40
- https://www.rcgroups.com/forums/showpost.php?p=18276967&postcount=702
