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Power Supply (Transformers)
Posted: 13 Feb 2019, 10:50
by Cin
Looking at purchasing new Power supplies (Transformers). We have a few of the Brand- IEC - General type, 2-12V, 5,5A,AC/DC. Which retail at $159 from Serrata. I have noticed that Serrata also have a cheaper Power supply @ $99.50, Brand- POPULAR General type, 2-12V, 5,5A,AC/DC.
Has anyone purchased the cheaper brand & are you happy with these?
Or does anyone have any suggestions of other brands?
Thanks
Cindy
Re: Power Supply (Transformers)
Posted: 13 Feb 2019, 18:33
by bigmack
Stick with the IEC . The clones are cheap for a reason . Just a little example . I was presented with one that had no pins inside the Power socket ...I looked at the lead .....apparently kid pulled 3 pin lead out of back , socket was so cheap , the pins had fused inside plug and he presents teacher with a lead with live bits of metal exposed
.
I would rather have 10 good reliable power supplies for $150 each than 15 potentially dodgy ones for $100 each ....and at the end of the day if you buy cheap how much do you spend replacing them prematurely
Re: Power Supply (Transformers)
Posted: 08 Sep 2020, 13:33
by emma.hunt
Hi Brains trust!
We have 2 of these transformers and when connected they keep saying overload. We've tried changing the fuse in the back but no luck.
Does anyone have any ideas?
Thanks!
Re: Power Supply (Transformers)
Posted: 08 Sep 2020, 14:06
by bigmack
Probably the Diodes have gone short circuit. they are worth about $1 each but the cost to replace them is not worth it .
Unfortunately we aren't allowed to do it our selves .
you can buy them .what you do with them is up to you .
https://au.mouser.com/ProductDetail/Vis ... gIfb_D_BwE
They are on a PCB behind the AC/DC terminals .( Note this is a pic of the IEC powers supply that your one was cloned off so I'd imagine its almost identical inside)
diodes.jpg
I've also had the smaller Zener Diodes go short too causing the same thing . BZW03C200 I think it is 6Watt 200V