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

[W2HX]

HA! You are of course, correct! OOPS. 270VDC
Thanks for spotting the error!


73 Eugene W2HX
Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos

From: milsurplus-bounces at mailman.qth.net <milsurplus-bounces at mailman.qth.net> On Behalf Of Jim Whartenby via Milsurplus
Sent: Saturday, May 27, 2023 6:10 PM
To: milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] R-45/ARR-7 Power Supply?

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<mailto:w2hx at w2hx.com>>
To: milsurplus at mailman.qth.net<mailto:milsurplus at mailman.qth.net> <milsurplus at mailman.qth.net<mailto:milsurplus at mailman.qth.net>>; mrca at mailman.qth.net<mailto:mrca at mailman.qth.net> <mrca at mailman.qth.net<mailto:mrca at 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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