That should be 270 VDC @ 135 mA not 2,700 VDC!
Jim

Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy


-----Original Message-----
From: W2HX <w2hx@w2hx.com>
To: milsurplus@mailman.qth.net <milsurplus@mailman.qth.net>; mrca@mailman.qth.net <mrca@mailman.qth.net>
Sent: Sat, May 27, 2023 4:55 pm
Subject: [Milsurplus] R-45/ARR-7 Power Supply?

Hello friends.
 
I just acquired a nice ARR-7 that was electrically restored and aligned by a very competent fellow (pic attached). He made a 60 Hz AC-DC power supply for it, but it was crazy expensive. So here goes. The specs I need are:
2,700 VDC @ 135 mA
25 VDC @ 350 mA (for scanning motor, which is half the fun!)
6.3 VDC @ 4.0 A
 
Does anyone know if there is some existing power supply from some other piece of equipment that might have similar specs that I could begin hunting for? I know there is the PP-32/AR but my understanding is that this is a 400 Hz unit (380 Hz to 1,000 Hz).
 
If there isn’t another commonly available PS that would supply these, I may have to resort to building one. On ebay there are transformers with multiple secondaries but searching for such a beast is very difficult. Any advice on searching for a multiple secondary transformer? And of course, should all else fail, I could make a PS with 3 transformers if necessary.
 
Any suggestions welcome.
 
 
73 Eugene W2HX
Subscribe to my Youtube Channel: 
https://www.youtube.com/@w2hx/videos
 
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