Ex VHF TV 50 volt power supply

ATUs, PSUs, Rotators, Test Equipment, components, etc
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VK3AXH
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Location: Mt Helen - Ballarat

Ex VHF TV 50 volt power supply

Post by VK3AXH »

I'm looking for info on a NEC 3 phase 150 amp 50 volt SMPS used to power V1600/A1200 NEC TV transmitters. These can easily be converted to
single phase but require a link on the control socket which has a outaide profile like a DB9 but looks like a Centronics socket. It has 14 pins ie 7 each side.
Any info or suggestions appreciated.
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VK3ZAZ
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Re: Ex VHF TV 50 volt power supply

Post by VK3ZAZ »

If its like the 28V its at one end
you can ask VK5DK,
Ill check mine tomorrow
Its last pin LHS I think
Tread your own path :om:
VK1JA
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Re: Ex VHF TV 50 volt power supply

Post by VK1JA »

Sounds like it's different to the 28v versions as they have 18 pins top and bottom.

Attached is a pic of the 28v psu I have, note the shorted pins on the right hand side.

P.> the fat edge of the plug is the top edge, if that makes sense...
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28v PSU 2.jpg
VK3AXH
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Posts: 37
Joined: Tue Oct 18, 2005 9:49 pm
Location: Mt Helen - Ballarat

Re: Ex VHF TV 50 volt power supply

Post by VK3AXH »

Thanks for the reponses so far. It is different to the 28 volt NEC supplies. The higher current 28 volt supplies ie 180amp use different pins in the centronics connector. I have one of these
going and it uses pins 3 and 21. The 50 volt supply is designed to slide into the rack along side the PA modules so is a similar size to those used in 20KW and 30KW transmitters. There are several
power supplies used in each transmitter which I assume is designed that way in case one fails then there is still some TX output ( I think ).

thanks again to all.

Ian VK3AXH
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