Thanks everyone all of this has been super helpful!
From: AF On Behalf Of Forrest Christian (List Account)
Sent: Tuesday, February 7, 2023 7:55 PM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Neg 48V Power Supply
Any isolated 48V supply works, just use the + wire for your return
ay, February 08, 2023 10:26 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Neg 48V Power Supply
Sterling,
Check out duracomm.com. I have 3 or 4 of their rackmount AC to 48vdc units.
If you need an exact model number let me know and I'll dig one up.
--
Best regards,
Mark
AF
Sent: Wednesday, February 8, 2023 8:58 AM
To: AnimalFarm Microwave Users Group
Cc: Chuck McCown
Subject: Re: [AFMUG] Neg 48V Power Supply
Maybe use the volt meter first to make sure there is no potential between
either power output to ground.
From: Forrest Christian (List Account
Maybe use the volt meter first to make sure there is no potential between
either power output to ground.
From: Forrest Christian (List Account)
Sent: Tuesday, February 7, 2023 7:54 PM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Neg 48V Power Supply
Any isolated 48V supply
Sterling,
Check out duracomm.com. I have 3 or 4 of their rackmount AC to 48vdc units.
If you need an exact model number let me know and I'll dig one up.
--
Best regards,
Markmailto:m...@mailmt.com
Myakka Communications
www.Myakka.com
--
Tuesday, February 7
Any isolated 48V supply works, just use the + wire for your return and the
- for your -48v.
I'm fond of the meanwell hlg supplies.
The only gotcha is that some supplies will tie the negative wire to the
ground pin on the ac plug, forcing it to be a +48v supply. You can use an
ohmmeter to verify
48 volts is 48 volts the only difference is +48 your - is grounded, -48
your positive is grounded, if you don't make a connection between +/- to
the tower/rack etc it's floating
Must check psu and input devices if they have a chassis reference, i.e. any
continuity between the chassis and the input
I've got a few projects where I just need a simple telco -48v power supply from
AC plug.
I've got a lot of the "normal" PS units lying around.
But what does it take to power a -48v device?
Is it something I can/should just rig from a standard AC to DC 48v PS?
Or is there something out there I
