[Milsurplus] R-45/ARR-7 Power Supply?

[Jim Whartenby]

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

 <!--#yiv4120396222 filtered {}#yiv4120396222 filtered {}#yiv4120396222 p.yiv4120396222MsoNormal, #yiv4120396222 li.yiv4120396222MsoNormal, #yiv4120396222 div.yiv4120396222MsoNormal {margin:0in;font-size:11.0pt;font-family:"Calibri", sans-serif;}#yiv4120396222 span.yiv4120396222EmailStyle17 {font-family:"Calibri", sans-serif;color:windowtext;}#yiv4120396222 .yiv4120396222MsoChpDefault {font-family:"Calibri", sans-serif;}#yiv4120396222 filtered {}#yiv4120396222 div.yiv4120396222WordSection1 {}-->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
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