Bipolar PSU (-12 0 +12)

[saor]

Anyone know if these are available locally? Looking for a 12v PSU that supplies:

-12v
0
+12v

One that does but can't find locally:

The Mean Well RT-65B is a 64.6W enclosed triple-output switching power supply. It features a universal AC input range (88–264V AC) and provides three distinct DC outputs: +5V (5A), +12V (2.8A), and -12V (0.5A).

• Output 1: 5V DC / 0.5–5A (adjustable ±10%) [0.1]
• Output 2: 12V DC / 0.2–2.8A
• Output 3: -12V DC / 0.0–0.5A

You get things like this here, but that -V doesn't mean negative voltage. The -V in this case just means 0v / ground rather than -12v.

 

[EmmanuelGoldstein]

the term "bipolar" doesn't apply. The correct term is "dual rail"

 

[WAslayer]

I believe RS Online and Communica carry Meanwell and Current Automation is the official distributor in SA..

Also, inverting module not an option..?

 

[Herr der Verboten]

Anyone know if these are available locally? Looking for a 12v PSU that supplies:

-12v
0
+12v

One that does but can't find locally:

View attachment 1929425



You get things like this here, but that -V doesn't mean negative voltage. The -V in this case just means 0v / ground rather than -12v.
View attachment 1929424

@icantchooseone

An expert will be here shortly

 

[NarrowBandFtw]

I find the best approach with anything bipolar is to ignore them when they start to exhibit completely abnormal mood swings and behaviour

just wait it out until they return to normal

 

[Magnum]

You 7812 and 7912 the hell out of it...

 

[saor]

You 7812 and 7912 the hell out of it...

I see....

 

[EmmanuelGoldstein]

You 7812 and 7912 the hell out of it...

What a waste, just get the right SMPS for the job.

 

[Herr der Verboten]

I find the best approach with anything bipolar is to ignore them when they start to exhibit completely abnormal mood swings and behaviour

just wait it out until they return to normal

We will allow this

 

[Magnum]

What a waste, just get the right SMPS for the job.

Where is the fun in that? Or the smoke....

 

[Jet-Fighter7700]

aliexpress?

 

[EmmanuelGoldstein]

aliexpress?

Chinesium that goes bang after 6 months? No thank you.

 

[Jet-Fighter7700]

Chinesium that goes bang after 6 months? No thank you.

some chinisium is better than other chinesium
all depends where it comes from you think Communica makes its own,

no they import the exact same stuff and slap a big margin on it.

 

[EmmanuelGoldstein]

some chinisium is better than other chinesium
all depends where it comes from you think Communica makes its own,

no they import the exact same stuff and slap a big margin on it.

MEAN WELL is a reputable brand that doesn't go bang in the night, if ever.

 

[Jet-Fighter7700]

MEAN WELL is a reputable brand that doesn't go bang in the night, if ever.

until you find out where its actually assembled,
straight out of Shenzen like everything else that has electricity or lights on it.

 

[EmmanuelGoldstein]

until you find out where its actually assembled,
straight out of Shenzen like everything else that has electricity or lights on it.

China this, China that.

Premium products do not have corners cut, that's the point you repeatedly fail to understand.

 

[Jet-Fighter7700]

China this, China that.

Premium products do not have corners cut, that's the point you repeatedly fail to understand.

hence my point, if even the good stuff is made in shenzen, just under 100 different "western names"
aliexpress is your friend, go straight to the source and get it from there.

 

[EmmanuelGoldstein]

hence my point, if even the good stuff is made in shenzen, just under 100 different "western names"
aliexpress is your friend, go straight to the source and get it from there.

I am going to try and make the point to you again.
All of them made in China:
Brand name versus CCK (Cheap Chinese KAK)
MEAN WELL: Quality PCB, Japanese Rubycon capacitors, meets CE and IEC specifications, is certified with standards bodies. Decent aluminium casing and cover. Expensive. Company is well known
CHINESE KNOCKOFF: Cheap PCB, Fongkong capacitors, standards marks are fake, underrated most often not capable of supplying the current on the label, noisy, will never pass EMC testing. Very thin aluminium casing, and very, almost tin-foil like cover. Cheap. Company nobody has ever heard of.