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ANTENTOP- 01- 2005, # 007  

The hAmTX Power Supply

 

It runs parallel to the satellite receiver cables and that should be the cause of all that QRM... So I need to reroute the antenna cables.

 

Meanwhile I have a good PSU to use with a typical 50W FM VHF/UHF radio. 

 

Things to try in the future: 

 

The PSU is not suitable for HF use. Could the PSU be improved with additional filters? I have not placed any filter on the output but there is space for the filter inside the PSU box if the fan is moved to the outside.

Links and documentation:

 

Atx12V Specification:

 

http://www.enhanceusa.com/documents/ATX12V_v2.01.pdf

 

Other specifications:

 

http://www.enhanceusa.com/support_tech.htm

 

Basic Modification Examples:

http://www.antennex.com/preview/archive3/powers.htm

 

http://www.qsl.net/aa3sj/Pages/PC-Supply.html

 

http://www.mattsrcstuff.com/PCPS.htm

 

http://www.qsl.net/vk2ep/news/dec2001.doc

 

St. Louis switcher

 

http://www2.arrl.org/members-only/tis/info/pdf/0205035.pdf

 

http://www.qsl.net/wj5o/project.htm

 

http://www.njqrp.org/qhbextra/6/6d.html

 

http://207.195.94.13/sart/radio_library/switcher-supply.pdf

 

Advanced ones:

Very complete:

http://www.qrp4u.de/docs/en/powersupply/index.htm

 

Nice modification

http://www.qsl.net/vk4ba/projects/index.html

 

ATX power supply example

http://pavouk.comp.cz/hw/en_atxps.html

 

Changing an ATX PSU to 12-24V input (input!):

http://www.acs.comcen.com.au/atxps.html

 

Data sheets and tech pubs:

http://www.fairchildsemi.com/ds/TL/TL494.pdf

 

http://www.fairchildsemi.com/ds/KA/KA7500B.pdf

 

http://focus.ti.com/docs/prod/folders/print/tl494.html

 

Nice Articles about switched power supply repair 

( on a slot machine tech magazine !! )

 

http://slot-tech-ftp.serveftp.com:8080/magazine/february02.pdf

 

http://slot-tech-ftp.serveftp.com:8080/magazine/march02.pdf

 

Modifing a PC power Supply for Lab use:

http://web2.murraystate.edu/andy.batts/ps/powersupply.htm

 

 

 

 

 

 

Final version (for now) with fan outside of the box

 

 

 

 

 

 

Inside View

 

 

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August 3, 2016 16:53

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